GameObject.Container in container doesn't call addedToScene event

Hello,

I found that if I add a GameObject.Container in a container the addedToScene event is not called.

It worked when I added the game object
in the scene with this.scene.add()
in a layer this.layer1.add(),
but not in the container with this.container1.add();

Is it a normal behavior?

EDIT : The event addedToScene is called when the scene changes… So weird.

Best,

Example here :