ThinInstances do not render unless mesh is added before sceneRegister()

Bugs
1

BabylonJS Lite issue.

Edit: Move back after code change to see the rendered cubes

2

cc @RaananW and @ryantrem

3

Sorry, just to be 100% sure i am seeing the right thing - can you save two versions of the playground - one with the issue and one with how it should be?

Thanks a lot!

4

Thin instances working: Babylon Lite Playground
Thin instances not working: Babylon Lite Playground