EngineView occasionally not rendering after reload

[CedricGuillemet]

Forum thread : https://forum.babylonjs.com/t/react-native-engineview-occasionally-not-rendering-on-load/33909

After a variable number of reloads, rendering is not visible but happens as it can be captured on iOS.
Reported to happen on iOS, no idea for Android/Windows.

Not fixed with latest changes on life cycle.

[bghgary]

@CedricGuillemet Can you check if this still repros?