diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7658cf84..e72aaab8f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,16 @@
+## [6.2.2](https://github.com/NativeScript/NativeScript/compare/6.2.1...6.2.2) (2019-11-25)
+
+
+### Bug Fixes
+
+* **android:** Fatal Exception: java.lang.OutOfMemoryError ([#8061](https://github.com/NativeScript/NativeScript/issues/8061)) ([#8098](https://github.com/NativeScript/NativeScript/issues/8098)) ([bca1271](https://github.com/NativeScript/NativeScript/commit/bca1271))
+* **frame:** nested frame wrong background after parent navigation ([#8095](https://github.com/NativeScript/NativeScript/issues/8095)) ([d983f79](https://github.com/NativeScript/NativeScript/commit/d983f79))
+* tab navigations don't work with lowercase xml ([#8016](https://github.com/NativeScript/NativeScript/issues/8016)) ([800f5bc](https://github.com/NativeScript/NativeScript/commit/800f5bc))
+* **frame:** push recreated frame back in frameStack when Don't Keep Activities enabled ([#8096](https://github.com/NativeScript/NativeScript/issues/8096)) ([47f4c25](https://github.com/NativeScript/NativeScript/commit/47f4c25))
+* **iOS:** check for iOS 13 APIs ([#8093](https://github.com/NativeScript/NativeScript/issues/8093)) ([b069ff3](https://github.com/NativeScript/NativeScript/commit/b069ff3))
+
+
+
 <a name="6.2.1"></a>
 ## [6.2.1](https://github.com/NativeScript/NativeScript/compare/6.2.0...6.2.1) (2019-11-12)
 
diff --git a/nativescript-core/application/application.ios.ts b/nativescript-core/application/application.ios.ts
index 349513ddf..f156cda3d 100644
--- a/nativescript-core/application/application.ios.ts
+++ b/nativescript-core/application/application.ios.ts
@@ -93,7 +93,7 @@ class CADisplayLinkTarget extends NSObject {
 /* tslint:disable */
 export class iOSApplication implements iOSApplicationDefinition {
     /* tslint:enable */
-    private _backgroundColor = majorVersion <= 12 ? UIColor.whiteColor : UIColor.systemBackgroundColor;
+    private _backgroundColor = (majorVersion <= 12 || !UIColor.systemBackgroundColor) ? UIColor.whiteColor : UIColor.systemBackgroundColor;
     private _delegate: typeof UIApplicationDelegate;
     private _window: UIWindow;
     private _observers: Array<NotificationObserver>;
@@ -125,7 +125,6 @@ export class iOSApplication implements iOSApplicationDefinition {
     }
 
     get systemAppearance(): "light" | "dark" | null {
-
         // userInterfaceStyle is available on UITraitCollection since iOS 12.
         if (majorVersion <= 11) {
             return null;
diff --git a/nativescript-core/ui/activity-indicator/activity-indicator.ios.ts b/nativescript-core/ui/activity-indicator/activity-indicator.ios.ts
index 9ce1dfb51..153e45673 100644
--- a/nativescript-core/ui/activity-indicator/activity-indicator.ios.ts
+++ b/nativescript-core/ui/activity-indicator/activity-indicator.ios.ts
@@ -9,7 +9,7 @@ const majorVersion = ios.MajorVersion;
 export class ActivityIndicator extends ActivityIndicatorBase {
     nativeViewProtected: UIActivityIndicatorView;
 
-    private _activityIndicatorViewStyle = majorVersion <= 12 ? UIActivityIndicatorViewStyle.Gray : UIActivityIndicatorViewStyle.Medium;
+    private _activityIndicatorViewStyle = (majorVersion <= 12 || !UIActivityIndicatorViewStyle.Medium) ? UIActivityIndicatorViewStyle.Gray : UIActivityIndicatorViewStyle.Medium;
 
     createNativeView() {
         const viewStyle = this._activityIndicatorViewStyle;
diff --git a/nativescript-core/ui/bottom-navigation/bottom-navigation.ios.ts b/nativescript-core/ui/bottom-navigation/bottom-navigation.ios.ts
index b5e06d67a..f94154dfc 100644
--- a/nativescript-core/ui/bottom-navigation/bottom-navigation.ios.ts
+++ b/nativescript-core/ui/bottom-navigation/bottom-navigation.ios.ts
@@ -93,7 +93,9 @@ class UITabBarControllerImpl extends UITabBarController {
 
         if (majorVersion >= 13) {
             const owner = this._owner.get();
-            if (owner && this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
+            if (owner &&
+                this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection &&
+                this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
                 owner.notify({ eventName: iosView.traitCollectionColorAppearanceChangedEvent, object: owner });
             }
         }
diff --git a/nativescript-core/ui/core/view/view-helper/view-helper.ios.ts b/nativescript-core/ui/core/view/view-helper/view-helper.ios.ts
index 99a8e9838..b52f28620 100644
--- a/nativescript-core/ui/core/view/view-helper/view-helper.ios.ts
+++ b/nativescript-core/ui/core/view/view-helper/view-helper.ios.ts
@@ -312,7 +312,9 @@ export namespace ios {
 
             if (majorVersion >= 13) {
                 const owner = this.owner.get();
-                if (owner && this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
+                if (owner && 
+                    this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection &&
+                    this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
                     owner.notify({ eventName: traitCollectionColorAppearanceChangedEvent, object: owner });
                 }
             }
diff --git a/nativescript-core/ui/frame/frame-common.ts b/nativescript-core/ui/frame/frame-common.ts
index fbb4e67ac..7abe9f168 100644
--- a/nativescript-core/ui/frame/frame-common.ts
+++ b/nativescript-core/ui/frame/frame-common.ts
@@ -59,12 +59,12 @@ export class FrameBase extends CustomLayoutView implements FrameDefinition {
         const top = FrameBase.topmost();
         if (top && top.canGoBack()) {
             top.goBack();
-    
+
             return true;
         } else if (top) {
             let parentFrameCanGoBack = false;
             let parentFrame = <FrameBase>getAncestor(top, "Frame");
-    
+
             while (parentFrame && !parentFrameCanGoBack) {
                 if (parentFrame && parentFrame.canGoBack()) {
                     parentFrameCanGoBack = true;
@@ -72,18 +72,18 @@ export class FrameBase extends CustomLayoutView implements FrameDefinition {
                     parentFrame = <FrameBase>getAncestor(parentFrame, "Frame");
                 }
             }
-    
+
             if (parentFrame && parentFrameCanGoBack) {
                 parentFrame.goBack();
-    
+
                 return true;
             }
         }
-    
+
         if (frameStack.length > 1) {
             top._popFromFrameStack();
         }
-    
+
         return false;
     }
 
@@ -205,11 +205,11 @@ export class FrameBase extends CustomLayoutView implements FrameDefinition {
             traceWrite(`NAVIGATE`, traceCategories.Navigation);
         }
 
+        this._pushInFrameStack();
+
         const entry = buildEntryFromArgs(param);
         const page = Builder.createViewFromEntry(entry) as Page;
 
-        this._pushInFrameStack();
-
         const backstackEntry: BackstackEntry = {
             entry: entry,
             resolvedPage: page,
diff --git a/nativescript-core/ui/frame/frame.android.ts b/nativescript-core/ui/frame/frame.android.ts
index e78eddb63..e06248e64 100644
--- a/nativescript-core/ui/frame/frame.android.ts
+++ b/nativescript-core/ui/frame/frame.android.ts
@@ -11,7 +11,7 @@ import * as application from "../../application";
 
 import {
     _stack, FrameBase, NavigationType, Observable,
-    traceCategories, traceEnabled, traceError, traceWrite, View
+    traceCategories, traceEnabled, traceError, traceWrite, View, Color
 } from "./frame-common";
 
 import {
@@ -88,6 +88,7 @@ function getAttachListener(): android.view.View.OnAttachStateChangeListener {
 }
 
 export class Frame extends FrameBase {
+    public _originalBackground: any;
     private _android: AndroidFrame;
     private _containerViewId: number = -1;
     private _tearDownPending = false;
@@ -238,6 +239,16 @@ export class Frame extends FrameBase {
         this.disposeCurrentFragment();
     }
 
+    onLoaded(): void {
+        if (this._originalBackground) {
+            this.backgroundColor = null;
+            this.backgroundColor = this._originalBackground;
+            this._originalBackground = null;
+        }
+
+        super.onLoaded();
+    }
+
     onUnloaded() {
         super.onUnloaded();
 
@@ -471,6 +482,13 @@ export class Frame extends FrameBase {
     }
 
     public createNativeView() {
+        // Create native view with available _currentEntry occur in Don't Keep Activities 
+        // scenario when Activity is recreated on app suspend/resume. Push frame back in frame stack 
+        // since it was removed in disposeNativeView() method.
+        if (this._currentEntry) {
+            this._pushInFrameStack();
+        }
+
         return new org.nativescript.widgets.ContentLayout(this._context);
     }
 
@@ -945,6 +963,7 @@ class FragmentCallbacksImplementation implements AndroidFragmentCallbacks {
 
             if (hasRemovingParent) {
                 const bitmapDrawable = new android.graphics.drawable.BitmapDrawable(application.android.context.getResources(), this.backgroundBitmap);
+                this.frame._originalBackground = this.frame.backgroundColor || new Color("White");
                 this.frame.nativeViewProtected.setBackgroundDrawable(bitmapDrawable);
                 this.backgroundBitmap = null;
             }
diff --git a/nativescript-core/ui/frame/frame.ios.ts b/nativescript-core/ui/frame/frame.ios.ts
index f31b12b93..774c67c00 100644
--- a/nativescript-core/ui/frame/frame.ios.ts
+++ b/nativescript-core/ui/frame/frame.ios.ts
@@ -541,7 +541,9 @@ class UINavigationControllerImpl extends UINavigationController {
 
         if (majorVersion >= 13) {
             const owner = this._owner.get();
-            if (owner && this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
+            if (owner &&
+                this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection &&
+                this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
                 owner.notify({ eventName: iosViewHelper.traitCollectionColorAppearanceChangedEvent, object: owner });
             }
         }
diff --git a/nativescript-core/ui/html-view/html-view.ios.ts b/nativescript-core/ui/html-view/html-view.ios.ts
index 3252c3626..d5c1d5b6e 100644
--- a/nativescript-core/ui/html-view/html-view.ios.ts
+++ b/nativescript-core/ui/html-view/html-view.ios.ts
@@ -59,7 +59,7 @@ export class HtmlView extends HtmlViewBase {
             null
         );
 
-        if (majorVersion >= 13) {
+        if (majorVersion >= 13 && UIColor.labelColor) {
             this.nativeViewProtected.textColor = UIColor.labelColor;
         }
     }
diff --git a/nativescript-core/ui/page/page.ios.ts b/nativescript-core/ui/page/page.ios.ts
index 4fd9a4fc3..d54cdf649 100644
--- a/nativescript-core/ui/page/page.ios.ts
+++ b/nativescript-core/ui/page/page.ios.ts
@@ -287,7 +287,9 @@ class UIViewControllerImpl extends UIViewController {
 
         if (majorVersion >= 13) {
             const owner = this._owner.get();
-            if (owner && this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
+            if (owner &&
+                this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection &&
+                this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
                 owner.notify({ eventName: iosView.traitCollectionColorAppearanceChangedEvent, object: owner });
             }
         }
@@ -298,7 +300,7 @@ export class Page extends PageBase {
     nativeViewProtected: UIView;
     viewController: UIViewControllerImpl;
 
-    private _backgroundColor = majorVersion <= 12 ? UIColor.whiteColor : UIColor.systemBackgroundColor;
+    private _backgroundColor = (majorVersion <= 12 && !UIColor.systemBackgroundColor) ? UIColor.whiteColor : UIColor.systemBackgroundColor;
     private _ios: UIViewControllerImpl;
     public _presentedViewController: UIViewController; // used when our page present native viewController without going through our abstraction.
 
diff --git a/nativescript-core/ui/tab-navigation-base/tab-navigation-base/tab-navigation-base.ts b/nativescript-core/ui/tab-navigation-base/tab-navigation-base/tab-navigation-base.ts
index ddd1429de..eb8d96ed0 100644
--- a/nativescript-core/ui/tab-navigation-base/tab-navigation-base/tab-navigation-base.ts
+++ b/nativescript-core/ui/tab-navigation-base/tab-navigation-base/tab-navigation-base.ts
@@ -1,12 +1,12 @@
 // Types
 import { TabNavigationBase as TabNavigationBaseDefinition, SelectedIndexChangedEventData } from ".";
-import { TabContentItem } from "../tab-content-item";
-import { TabStrip } from "../tab-strip";
 import { TabStripItem } from "../tab-strip-item";
 import { ViewBase, AddArrayFromBuilder, AddChildFromBuilder, EventData } from "../../core/view";
 
 // Requires
-import { View, Property, CoercibleProperty, isIOS, Color } from "../../core/view";
+import { View, Property, CoercibleProperty, isIOS } from "../../core/view";
+import { TabContentItem } from "../tab-content-item";
+import { TabStrip } from "../tab-strip";
 
 // TODO: Impl trace
 // export const traceCategory = "TabView";
@@ -29,14 +29,14 @@ export class TabNavigationBase extends View implements TabNavigationBaseDefiniti
     }
 
     public _addChildFromBuilder(name: string, value: any): void {
-        if (name === "TabContentItem") {
+        if (value instanceof TabContentItem) {
             if (!this.items) {
                 this.items = new Array<TabContentItem>();
             }
             this.items.push(<TabContentItem>value);
             this._addView(value);
             // selectedIndexProperty.coerce(this);
-        } else if (name === "TabStrip") {
+        } else if (value instanceof TabStrip) {
             // Setting tabStrip will trigger onTabStripChanged
             this.tabStrip = value;
         }
diff --git a/nativescript-core/ui/tab-navigation-base/tab-strip-item/tab-strip-item.ts b/nativescript-core/ui/tab-navigation-base/tab-strip-item/tab-strip-item.ts
index 10d846c7e..bab24db82 100644
--- a/nativescript-core/ui/tab-navigation-base/tab-strip-item/tab-strip-item.ts
+++ b/nativescript-core/ui/tab-navigation-base/tab-strip-item/tab-strip-item.ts
@@ -3,8 +3,6 @@ import { TabStripItem as TabStripItemDefinition } from ".";
 import { PropertyChangeData } from "../../../data/observable";
 import { TabNavigationBase } from "../tab-navigation-base";
 import { TabStrip } from "../tab-strip";
-import { Image } from "../../image/image";
-import { Label } from "../../label/label";
 import { Color } from "../../../color";
 import { AddChildFromBuilder } from "../../core/view";
 
@@ -12,8 +10,9 @@ import { AddChildFromBuilder } from "../../core/view";
 import {
     View, ViewBase, CSSType, backgroundColorProperty, backgroundInternalProperty, PseudoClassHandler
 } from "../../core/view";
-import { Tabs } from "../../tabs";
 import { isIOS } from "../../../platform";
+import { Image } from "../../image/image";
+import { Label } from "../../label/label";
 
 export * from "../../core/view";
 export const traceCategory = "TabView";
@@ -173,14 +172,14 @@ export class TabStripItem extends View implements TabStripItemDefinition, AddChi
     }
 
     public _addChildFromBuilder(name: string, value: any): void {
-        if (name === "Image") {
+        if (value instanceof Image) {
             this.image = <Image>value;
             this.iconSource = (<Image>value).src;
             this._addView(value);
             // selectedIndexProperty.coerce(this);
         }
 
-        if (name === "Label") {
+        if (value instanceof Label) {
             this.label = <Label>value;
             this.title = (<Label>value).text;
             this._addView(value);
@@ -214,6 +213,8 @@ export class TabStripItem extends View implements TabStripItemDefinition, AddChi
             const tabStripParent = parent && <TabNavigationBase>parent.parent;
             if (this._index === tabStripParent.selectedIndex &&
                 !(isIOS && tabStripParent.cssType.toLowerCase() === "tabs")) {
+                // HACK: tabStripParent instanceof Tabs creates a circular dependency
+                // HACK: tabStripParent.cssType === "Tabs" is a hacky workaround
                 this._goToVisualState("highlighted");
             }
         } else {
diff --git a/nativescript-core/ui/tab-navigation-base/tab-strip/tab-strip.ts b/nativescript-core/ui/tab-navigation-base/tab-strip/tab-strip.ts
index deead4fb8..2b70e5439 100644
--- a/nativescript-core/ui/tab-navigation-base/tab-strip/tab-strip.ts
+++ b/nativescript-core/ui/tab-navigation-base/tab-strip/tab-strip.ts
@@ -2,7 +2,6 @@
 import { Color } from "../../../color";
 import { AddArrayFromBuilder, AddChildFromBuilder, EventData, ViewBase } from "../../core/view";
 import { TabNavigationBase } from "../tab-navigation-base";
-import { TabStripItem } from "../tab-strip-item";
 import { TabStripItemEventData, TabStrip as TabStripDefinition } from "./";
 
 // Requires
@@ -10,6 +9,7 @@ import {
     backgroundColorProperty, backgroundInternalProperty, booleanConverter,
     colorProperty, CSSType, fontInternalProperty, Property, View
 } from "../../core/view";
+import { TabStripItem } from "../tab-strip-item";
 import { textTransformProperty } from "../../text-base";
 
 export const traceCategory = "TabView";
@@ -44,7 +44,7 @@ export class TabStrip extends View implements TabStripDefinition, AddChildFromBu
     }
 
     public _addChildFromBuilder(name: string, value: any): void {
-        if (name === "TabStripItem") {
+        if (value instanceof TabStripItem) {
             if (!this.items) {
                 this.items = new Array<TabStripItem>();
             }
diff --git a/nativescript-core/ui/tab-view/tab-view-common.ts b/nativescript-core/ui/tab-view/tab-view-common.ts
index 7967155b6..f677b041a 100644
--- a/nativescript-core/ui/tab-view/tab-view-common.ts
+++ b/nativescript-core/ui/tab-view/tab-view-common.ts
@@ -140,7 +140,7 @@ export class TabViewBase extends View implements TabViewDefinition, AddChildFrom
     }
 
     public _addChildFromBuilder(name: string, value: any): void {
-        if (name === "TabViewItem") {
+        if (value instanceof TabViewItemBase) {
             if (!this.items) {
                 this.items = new Array<TabViewItemBase>();
             }
diff --git a/nativescript-core/ui/tab-view/tab-view.android.ts b/nativescript-core/ui/tab-view/tab-view.android.ts
index 77aed793d..600046f90 100644
--- a/nativescript-core/ui/tab-view/tab-view.android.ts
+++ b/nativescript-core/ui/tab-view/tab-view.android.ts
@@ -542,7 +542,11 @@ export class TabView extends TabViewBase {
 
     public _loadUnloadTabItems(newIndex: number) {
         const items = this.items;
-        const lastIndex = this.items.length - 1;
+        if (!items) {
+            return;
+        }
+
+        const lastIndex = items.length - 1;
         const offsideItems = this.androidTabsPosition === "top" ? this.androidOffscreenTabLimit : 1;
 
         let toUnload = [];
diff --git a/nativescript-core/ui/tab-view/tab-view.ios.ts b/nativescript-core/ui/tab-view/tab-view.ios.ts
index 02e00b24f..7d0cef33c 100644
--- a/nativescript-core/ui/tab-view/tab-view.ios.ts
+++ b/nativescript-core/ui/tab-view/tab-view.ios.ts
@@ -78,7 +78,9 @@ class UITabBarControllerImpl extends UITabBarController {
 
         if (majorVersion >= 13) {
             const owner = this._owner.get();
-            if (owner && this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
+            if (owner &&
+                this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection &&
+                this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
                 owner.notify({ eventName: iosView.traitCollectionColorAppearanceChangedEvent, object: owner });
             }
         }
diff --git a/nativescript-core/ui/tabs/tabs.android.ts b/nativescript-core/ui/tabs/tabs.android.ts
index f2ee8e65b..3659eed9a 100644
--- a/nativescript-core/ui/tabs/tabs.android.ts
+++ b/nativescript-core/ui/tabs/tabs.android.ts
@@ -465,7 +465,11 @@ export class Tabs extends TabsBase {
 
     public _loadUnloadTabItems(newIndex: number) {
         const items = this.items;
-        const lastIndex = this.items.length - 1;
+        if (!items) {
+            return;
+        }
+
+        const lastIndex = items.length - 1;
         const offsideItems = this.offscreenTabLimit;
 
         let toUnload = [];
diff --git a/nativescript-core/ui/tabs/tabs.ios.ts b/nativescript-core/ui/tabs/tabs.ios.ts
index d7d622371..82aad3eb1 100644
--- a/nativescript-core/ui/tabs/tabs.ios.ts
+++ b/nativescript-core/ui/tabs/tabs.ios.ts
@@ -24,7 +24,7 @@ export * from "./tabs-common";
 const majorVersion = iosUtils.MajorVersion;
 
 // Equivalent to dispatch_async(dispatch_get_main_queue(...)) call
-const invokeOnRunLoop = (function() {
+const invokeOnRunLoop = (function () {
     const runloop = CFRunLoopGetMain();
 
     return (action: () => any) => {
@@ -100,7 +100,7 @@ class UIPageViewControllerImpl extends UIPageViewController {
 
         tabBar.delegate = this.tabBarDelegate = MDCTabBarDelegateImpl.initWithOwner(new WeakRef(owner));
 
-        if (majorVersion <= 12) {
+        if (majorVersion <= 12 || !UIColor.labelColor) {
             tabBar.tintColor = UIColor.blueColor;
             tabBar.barTintColor = UIColor.whiteColor;
             tabBar.setTitleColorForState(UIColor.blackColor, MDCTabBarItemState.Normal);
@@ -216,7 +216,9 @@ class UIPageViewControllerImpl extends UIPageViewController {
 
         if (majorVersion >= 13) {
             const owner = this._owner.get();
-            if (owner && this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
+            if (owner &&
+                this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection &&
+                this.traitCollection.hasDifferentColorAppearanceComparedToTraitCollection(previousTraitCollection)) {
                 owner.notify({ eventName: iosView.traitCollectionColorAppearanceChangedEvent, object: owner });
             }
         }
@@ -634,7 +636,11 @@ export class Tabs extends TabsBase {
 
     public _loadUnloadTabItems(newIndex: number) {
         const items = this.items;
-        const lastIndex = this.items.length - 1;
+        if (!items) {
+            return;
+        }
+
+        const lastIndex = items.length - 1;
         const offsideItems = this.offscreenTabLimit;
 
         let toUnload = [];
@@ -766,6 +772,10 @@ export class Tabs extends TabsBase {
 
     public _setCanBeLoaded(index: number) {
         const items = this.items;
+        if (!this.items) {
+            return;
+        }
+
         const lastIndex = items.length - 1;
         const offsideItems = this.offscreenTabLimit;
 
@@ -1083,11 +1093,9 @@ export class Tabs extends TabsBase {
             this._currentNativeSelectedIndex = value;
             this.viewController.setViewControllersDirectionAnimatedCompletion(controllers, navigationDirection, true, (finished: boolean) => {
                 if (finished) {
-                    if (majorVersion < 10) {
-                        // HACK: UIPageViewController fix; see https://stackoverflow.com/a/17330606
-                        invokeOnRunLoop(() => this.viewController.setViewControllersDirectionAnimatedCompletion(controllers, navigationDirection, false, null));
-                    }
-                    
+                    // HACK: UIPageViewController fix; see https://stackoverflow.com/a/17330606
+                    invokeOnRunLoop(() => this.viewController.setViewControllersDirectionAnimatedCompletion(controllers, navigationDirection, false, null));
+
                     this._canSelectItem = true;
                     this._setCanBeLoaded(value);
                     this._loadUnloadTabItems(value);
diff --git a/nativescript-core/ui/text-base/text-base.ios.ts b/nativescript-core/ui/text-base/text-base.ios.ts
index a96fcaed0..e47cf139b 100644
--- a/nativescript-core/ui/text-base/text-base.ios.ts
+++ b/nativescript-core/ui/text-base/text-base.ios.ts
@@ -155,7 +155,7 @@ export class TextBase extends TextBaseCommon {
             this.nativeTextViewProtected.setAttributedTitleForState(attrText, UIControlState.Normal);
         }
         else {
-            if (majorVersion >= 13) {
+            if (majorVersion >= 13 && UIColor.labelColor) {
                 this.nativeTextViewProtected.textColor = UIColor.labelColor;
             }
 
@@ -207,7 +207,7 @@ export class TextBase extends TextBaseCommon {
         if (dict.size > 0 || isTextView) {
             if (style.color) {
                 dict.set(NSForegroundColorAttributeName, style.color.ios);
-            } else if (majorVersion >= 13) {
+            } else if (majorVersion >= 13 && UIColor.labelColor) {
                 dict.set(NSForegroundColorAttributeName, UIColor.labelColor);
             }
         }
diff --git a/nativescript-core/ui/text-view/text-view.ios.ts b/nativescript-core/ui/text-view/text-view.ios.ts
index a1411cffd..a45d643d9 100644
--- a/nativescript-core/ui/text-view/text-view.ios.ts
+++ b/nativescript-core/ui/text-view/text-view.ios.ts
@@ -116,8 +116,8 @@ export class TextView extends EditableTextBase implements TextViewDefinition {
     private _isShowingHint: boolean;
     public _isEditing: boolean;
 
-    private _hintColor = majorVersion <= 12 ? UIColor.blackColor.colorWithAlphaComponent(0.22) : UIColor.placeholderTextColor;
-    private _textColor = majorVersion <= 12 ? null : UIColor.labelColor;
+    private _hintColor = (majorVersion <= 12 || !UIColor.placeholderTextColor) ? UIColor.blackColor.colorWithAlphaComponent(0.22) : UIColor.placeholderTextColor;
+    private _textColor = (majorVersion <= 12 || !UIColor.labelColor) ? null : UIColor.labelColor;
 
     createNativeView() {
         const textView = NoScrollAnimationUITextView.new();
diff --git a/tests/app/platform/platform-tests.ts b/tests/app/platform/platform-tests.ts
index c6b3f8734..11e0d3834 100644
--- a/tests/app/platform/platform-tests.ts
+++ b/tests/app/platform/platform-tests.ts
@@ -1,6 +1,7 @@
 import * as TKUnit from "../tk-unit";
 import * as app from "@nativescript/core/application";
 import * as platformModule from "@nativescript/core/platform";
+import { ios } from "@nativescript/core/utils/utils";
 
 export function test_platform() {
     let expectedPlatform;
@@ -19,7 +20,12 @@ export function test_device_screen() {
     TKUnit.assert(platformModule.device.uuid, "Device UUID not initialized.");
 
     TKUnit.assert(platformModule.device.language, "Preferred language not initialized.");
-    TKUnit.assert(platformModule.device.region, "Preferred region not initialized.");
+    
+    // NSLocale.currentLocale.objectForKey(NSLocaleCountryCode) not initialized by default on iOS13 simulator;
+    // can be set through Settings -> General -> Language & Region -> Region
+    if (platformModule.isAndroid || ios.MajorVersion < 13) {
+        TKUnit.assert(platformModule.device.region, "Preferred region not initialized.");
+    }
 
     TKUnit.assert(platformModule.device.os, "OS not initialized.");
     TKUnit.assert(platformModule.device.osVersion, "OS version not initialized.");
diff --git a/tests/app/test-runner.ts b/tests/app/test-runner.ts
index da5cee296..1e2a966ed 100644
--- a/tests/app/test-runner.ts
+++ b/tests/app/test-runner.ts
@@ -202,6 +202,9 @@ allTests["LABEL"] = labelTests;
 import * as bottomNavigationTests from "./ui/bottom-navigation/bottom-navigation-tests";
 allTests["BOTTOM-NAVIGATION"] = bottomNavigationTests;
 
+import * as bottomNavigationTestsNew from "./ui/bottom-navigation/bottom-navigation-tests-new";
+allTests["BOTTOM-NAVIGATION-NEW"] = bottomNavigationTestsNew;
+
 import * as bottomNavigationNavigationTests from "./ui/bottom-navigation/bottom-navigation-navigation-tests";
 // TODO: uncomment this
 // allTests["BOTTOM-NAVIGATION-NAVIGATION"] = bottomNavigationNavigationTests;
@@ -209,12 +212,18 @@ import * as bottomNavigationNavigationTests from "./ui/bottom-navigation/bottom-
 import * as tabsTests from "./ui/tabs/tabs-tests";
 allTests["TABS"] = tabsTests;
 
+import * as tabsTestsNew from "./ui/tabs/tabs-tests-new";
+allTests["TABS-NEW"] = tabsTestsNew;
+
 import * as tabsNavigationTests from "./ui/tabs/tabs-navigation-tests";
 allTests["TABS-NAVIGATION"] = tabsNavigationTests;
 
 import * as tabViewTests from "./ui/tab-view/tab-view-tests";
 allTests["TAB-VIEW"] = tabViewTests;
 
+import * as tabViewTestsNew from "./ui/tab-view/tab-view-tests-new";
+allTests["TAB-VIEW-NEW"] = tabViewTestsNew;
+
 import * as tabViewNavigationTests from "./ui/tab-view/tab-view-navigation-tests";
 allTests["TAB-VIEW-NAVIGATION"] = tabViewNavigationTests;
 
diff --git a/tests/app/ui/bottom-navigation/bottom-navigation-tests-new.ts b/tests/app/ui/bottom-navigation/bottom-navigation-tests-new.ts
new file mode 100644
index 000000000..50b2f5427
--- /dev/null
+++ b/tests/app/ui/bottom-navigation/bottom-navigation-tests-new.ts
@@ -0,0 +1,33 @@
+import { Image, Label, BottomNavigation, Builder, TabContentItem, TabStrip, TabStripItem } from "@nativescript/core/ui";
+import * as TKUnit from "../../tk-unit";
+
+export function test_lowercase_declaration() {
+    const root = Builder.parse(`
+        <bottom-navigation>
+            <tab-strip id="tab-strip">
+                <tab-strip-item id="tab-strip-item">
+                    <image src="res://icon"  id="tab-strip-item-image" />
+                    <label text="test" id="tab-strip-item-label" />
+                </tab-strip-item>
+            </tab-strip>
+            <tab-content-item id="tab-content-item">
+                <label text="test" id="tab-content-item-label" />
+            </tab-content-item>
+        </bottom-navigation>
+    `);
+
+    const tabStrip = root.getViewById("tab-strip");
+    const tabStripItem = root.getViewById("tab-strip-item");
+    const tabStripItemImage = root.getViewById("tab-strip-item-image");
+    const tabStripItemLabel = root.getViewById("tab-strip-item-label");
+    const tabContentItem = root.getViewById("tab-content-item");
+    const tabContentItemLabel = root.getViewById("tab-content-item-label");
+
+    TKUnit.assert(root instanceof BottomNavigation, "Expected result: BottomNavigation!; Actual result: " + root);
+    TKUnit.assert(tabStrip instanceof TabStrip, "Expected result: TabStrip!; Actual result: " + tabStrip);
+    TKUnit.assert(tabStripItem instanceof TabStripItem, "Expected result: TabStripItem!; Actual result: " + tabStripItem);
+    TKUnit.assert(tabStripItemImage instanceof Image, "Expected result: Image!; Actual result: " + tabStripItemImage);
+    TKUnit.assert(tabStripItemLabel instanceof Label, "Expected result: Label!; Actual result: " + tabStripItemLabel);
+    TKUnit.assert(tabContentItem instanceof TabContentItem, "Expected result: TabContentItem!; Actual result: " + tabContentItem);
+    TKUnit.assert(tabContentItemLabel instanceof Label, "Expected result: Label!; Actual result: " + tabContentItemLabel);
+}
diff --git a/tests/app/ui/list-view/list-view-tests.ts b/tests/app/ui/list-view/list-view-tests.ts
index 3e1ea2af7..24a275b0b 100644
--- a/tests/app/ui/list-view/list-view-tests.ts
+++ b/tests/app/ui/list-view/list-view-tests.ts
@@ -763,17 +763,6 @@ export class ListViewTest extends UITest<ListView> {
         TKUnit.assertEqual(lastNativeElementVisible, false, "Last element is not visible");
     }
 
-    public test_scrollToIndex_should_coerce_larger_index_to_last_item_index() {
-        var listView = this.testView;
-
-        listView.items = MANY_ITEMS;
-        listView.scrollToIndex(10000);
-        TKUnit.wait(0.1);
-
-        var lastNativeElementVisible = this.checkItemVisibleAtIndex(listView, MANY_ITEMS.length - 1);
-        TKUnit.assertEqual(lastNativeElementVisible, true, "last element is visible");
-    }
-
     public test_scrollToIndex_should_not_throw_if_items_not_set() {
         var listView = this.testView;
         listView.scrollToIndex(10000);
diff --git a/tests/app/ui/page/page-tests-common.ts b/tests/app/ui/page/page-tests-common.ts
index 2a71baeed..c488ddb9d 100644
--- a/tests/app/ui/page/page-tests-common.ts
+++ b/tests/app/ui/page/page-tests-common.ts
@@ -385,7 +385,7 @@ export function test_page_backgroundColor() {
     helper.navigate(factory);
 
     if (isIOS) {
-        const backgroundColor = ios.MajorVersion <= 12 ? UIColor.whiteColor : UIColor.systemBackgroundColor;
+        const backgroundColor = (ios.MajorVersion <= 12 || !UIColor.systemBackgroundColor) ? UIColor.whiteColor : UIColor.systemBackgroundColor;
         TKUnit.assertEqual(page.nativeView.backgroundColor, backgroundColor, "page backgroundColor is wrong");
     } else {
         const whiteColor = new Color("white");
diff --git a/tests/app/ui/tab-view/tab-view-tests-new.ts b/tests/app/ui/tab-view/tab-view-tests-new.ts
new file mode 100644
index 000000000..bc9c73e1b
--- /dev/null
+++ b/tests/app/ui/tab-view/tab-view-tests-new.ts
@@ -0,0 +1,19 @@
+import { Label, Builder, TabView, TabViewItem } from "@nativescript/core/ui";
+import * as TKUnit from "../../tk-unit";
+
+export function test_lowercase_declaration() {
+    const root = Builder.parse(`
+        <tab-view>
+            <tab-view-item id="tab-view-item">
+                <label text="test" id="tab-view-item-label" />
+            </tab-view-item>
+        </tab-view>
+    `);
+
+    const tabViewItem = root.getViewById("tab-view-item");
+    const tabViewItemLabel = root.getViewById("tab-view-item-label");
+
+    TKUnit.assert(root instanceof TabView, "Expected result: TabView!; Actual result: " + root);
+    TKUnit.assert(tabViewItem instanceof TabViewItem, "Expected result: TabViewItem!; Actual result: " + tabViewItem);
+    TKUnit.assert(tabViewItemLabel instanceof Label, "Expected result: Label!; Actual result: " + tabViewItemLabel);
+}
diff --git a/tests/app/ui/tabs/tabs-tests-new.ts b/tests/app/ui/tabs/tabs-tests-new.ts
new file mode 100644
index 000000000..0d61a2be3
--- /dev/null
+++ b/tests/app/ui/tabs/tabs-tests-new.ts
@@ -0,0 +1,33 @@
+import { Image, Label, Builder, TabContentItem, Tabs, TabStrip, TabStripItem } from "@nativescript/core/ui";
+import * as TKUnit from "../../tk-unit";
+
+export function test_lowercase_declaration() {
+    const root = Builder.parse(`
+        <tabs>
+            <tab-strip id="tab-strip">
+                <tab-strip-item id="tab-strip-item">
+                    <image src="res://icon"  id="tab-strip-item-image" />
+                    <label text="test" id="tab-strip-item-label" />
+                </tab-strip-item>
+            </tab-strip>
+            <tab-content-item id="tab-content-item">
+                <label text="test" id="tab-content-item-label" />
+            </tab-content-item>
+        </tabs>
+    `);
+
+    const tabStrip = root.getViewById("tab-strip");
+    const tabStripItem = root.getViewById("tab-strip-item");
+    const tabStripItemImage = root.getViewById("tab-strip-item-image");
+    const tabStripItemLabel = root.getViewById("tab-strip-item-label");
+    const tabContentItem = root.getViewById("tab-content-item");
+    const tabContentItemLabel = root.getViewById("tab-content-item-label");
+
+    TKUnit.assert(root instanceof Tabs, "Expected result: Tabs!; Actual result: " + root);
+    TKUnit.assert(tabStrip instanceof TabStrip, "Expected result: TabStrip!; Actual result: " + tabStrip);
+    TKUnit.assert(tabStripItem instanceof TabStripItem, "Expected result: TabStripItem!; Actual result: " + tabStripItem);
+    TKUnit.assert(tabStripItemImage instanceof Image, "Expected result: Image!; Actual result: " + tabStripItemImage);
+    TKUnit.assert(tabStripItemLabel instanceof Label, "Expected result: Label!; Actual result: " + tabStripItemLabel);
+    TKUnit.assert(tabContentItem instanceof TabContentItem, "Expected result: TabContentItem!; Actual result: " + tabContentItem);
+    TKUnit.assert(tabContentItemLabel instanceof Label, "Expected result: Label!; Actual result: " + tabContentItemLabel);
+}