diff --git a/tests/app/ui/helper.ts b/tests/app/ui/helper.ts
index 0f8509712..74bc6dd4a 100644
--- a/tests/app/ui/helper.ts
+++ b/tests/app/ui/helper.ts
@@ -150,9 +150,13 @@ export function buildUIWithWeakRefAndInteract<T extends View>(createFunc: () =>
         // Could cause GC on the next call.
         // NOTE: Don't replace this with forceGC();
         new ArrayBuffer(4 * 1024 * 1024);
+
+        // An additional GC and wait are needed since WebKit upgrade to version 12.0
+        // (TEXT-FIELD.testMemoryLeak test started failing sporadically)
+        utils.GC();
+        TKUnit.wait(0.1);
     }
     utils.GC();
-
     try {
         TKUnit.assert(!weakRef.get(), weakRef.get() + " leaked!");
         done(null);
@@ -683,13 +687,13 @@ function setupSetters(): void {
     cssSetters.set("selectedTabTextColor", "red");
     cssSetters.set("androidSelectedTabHighlightColor", "red");
 
-    // ListView-specific props 
+    // ListView-specific props
     cssSetters.set("separatorColor", "red");
 
     // SegmentedBar-specific props
     cssSetters.set("selectedBackgroundColor", "red");
 
-    // Page-specific props 
+    // Page-specific props
     cssSetters.set("statusBarStyle", "light");
     cssSetters.set("androidStatusBarBackground", "red");
 
@@ -855,4 +859,4 @@ function setupSetters(): void {
             return text ? text.toString() : text;
         }
     });
-}
\ No newline at end of file
+}
diff --git a/tests/app/ui/text-field/text-field-tests.ts b/tests/app/ui/text-field/text-field-tests.ts
index 1ecc4b92b..fae77c0f1 100644
--- a/tests/app/ui/text-field/text-field-tests.ts
+++ b/tests/app/ui/text-field/text-field-tests.ts
@@ -200,7 +200,7 @@ if (isIOS) {
         helper.buildUIAndRunTest(_createTextFieldFunc(), function (views: Array<View>) {
             var textField = <TextField>views[0];
             textField.color = new Color("red");
-            TKUnit.assertEqual(textField.color.ios.CGColor, textField.ios.textColor.CGColor, "textField.color");
+            TKUnit.assert(textField.color.ios.CGColor.isEqual(textField.ios.textColor.CGColor), "textField.color");
         });
     }
 }
@@ -633,7 +633,7 @@ export function test_android_ime_actions_move_focus() {
     if (isIOS) {
         return;
     }
-    
+
     const stack = new StackLayout();
     const addTextField = () => {
         const tf = new TextField();
@@ -655,7 +655,7 @@ export function test_android_ime_actions_move_focus() {
 
         let edittext = stack._context.getCurrentFocus();
         TKUnit.assertNotNull(edittext, "TextField not focused.");
-        
+
         edittext.onEditorAction(android.view.inputmethod.EditorInfo.IME_ACTION_NEXT);
         assert(0, 1);
         assert(1, 0);
@@ -691,4 +691,4 @@ export function test_android_ime_actions_move_focus() {
         assert(1, 2);
         assert(2, 2);
     });
-}
\ No newline at end of file
+}