Display Issue on Viewport pitch change

[juliuslipp]

My Problem:
I use floor (geojson) layers and 3D marker layers (placed between those layers to hide them).
After I change the pitch of the map, my markers are rendered wrong.
If I reload the map with another pitch there is no problem, only on active change.

Freshly loaded map:

After changing pitch

Your library is great for someone like me, having no idea about matrix transformation and stuff, thanks. Any help will be greatly appreciated.