diff --git a/lib/src/runtime_artboard.dart b/lib/src/runtime_artboard.dart
index 9fd8f67..d71fbe9 100644
--- a/lib/src/runtime_artboard.dart
+++ b/lib/src/runtime_artboard.dart
@@ -93,9 +93,8 @@ class RuntimeArtboard extends Artboard implements CoreContext {
   }
 
   @override
-  Core<CoreContext>? makeCoreInstance(int typeKey) {
-    return null;
-  }
+  Core<CoreContext>? makeCoreInstance(int typeKey) =>
+      RiveCoreContext.makeCoreInstance(typeKey);
 
   @override
   void dirty(void Function() dirt) {
@@ -107,15 +106,17 @@ class RuntimeArtboard extends Artboard implements CoreContext {
     _redraw.notify();
   }
 
-  Artboard? instance() {
+  @override
+  Artboard instance() {
     var artboard = RuntimeArtboard();
+    artboard.context = artboard;
     artboard.copy(this);
     artboard._objects.add(artboard);
     // First copy the objects ensuring onAddedDirty can later find them in the
     // _objects list.
     for (final object in _objects.skip(1)) {
       Core? clone = object?.clone();
-      artboard._objects.add(clone);
+      artboard.addObject(clone);
     }
 
     // Then run the onAddedDirty loop.
@@ -126,12 +127,15 @@ class RuntimeArtboard extends Artboard implements CoreContext {
       }
       object?.onAddedDirty();
     }
+    animations.forEach(artboard.animations.add);
     for (final object in artboard.objects.toList(growable: false)) {
       if (object == null) {
         continue;
       }
       object.onAdded();
+      InternalCoreHelper.markValid(object);
     }
     artboard.clean();
+    return artboard;
   }
 }