I’m encountering an issue with transparent materials. When I set a static mesh’s mobility to static and place it inside a room, it isn’t affected by dynamic lighting, such as when it’s behind a wall. However, this static mesh still appears illuminated. I’ve uploaded the material for everyone to try.
Their Position
Glass_Blur_Mobile.uasset (15.1 KB)
I think it’s just the opacity, it also looks whiteish for me also, until I set the opacity to .1
PS: I’m not quite clear, are you using static light, or moveable?
There two kind light in the sence. One is moveable and one is static light. The static mesh is static. If you turn on this Moveable light, the static mesh will become illuminated and appear brighter than after it has been baked, which is incorrect. There should be no effect from either. Once you turn off the Moveable light, it will return to normal.
I think even if a mesh is static, it will receive moveable light. So you get the built settings + moveable light?
Is it even possible to mix light types? 
( possibly a dumb question )
@ClockworkOcean Sorry, I forgot to mention the positional relationship between them. You can see that only the static mesh with this material is affected by the Moveable light; static meshes with other materials are not affected. This is quite strange, as I didn’t encounter this issue with UE4.26.
