LUMEN, why inside a closed room I can even see lighting instead that darkness?

[nuclearpeace]

does not look the same as the others

@K_Storm_Studio

I’ve create a room with 4 walls , floor and ceiling, room is completely closed but I still see lighting

I thought it’s quite the same.
By Lumen scene debug view you mean View mode → Lumen → Overview? Than it’s like this (reflection is clipped for some reason, idk):