Cube is shaded completely dark/black at bootom face

[Maderschaden]

You sir are my saviour!

Perfectly lit cube:

Question solved thx to @ClockworkOcean

For anyone reading this:

• Problem occures only in VR template.
• To solve:

1. Use brighter “Fog Inscattering Color” in ExponentialHeightFog
2. Use brighter “Lower Hemisphere Color” in SkyLight