Will CPU Lightmass receiving any updates? I know according to epics standpoint it is in maintenance mode (https://forums.unrealengine.com/t/recommended-lightmass-version/2709756/3)
I have the following issues with it (all using the stationary skylight):
-
reflections on materials with clearcoat shading (legacy and Substrate) are incorrectly handled in areas that are shadowed by the skylight.
-
GI is not working.
-
shading subsurface/ two sided foliage are not working, rendering the backside completely black without any skylight contribution.
Here an example of missing GI (tunnel lights) and the reflections on the car
…and here an example with the missing lit backside of foliage.
here a full video where the car drives into the tunnel, any foliage you see has the two sided foliage type enabled.

