Operating system: Linux KDE Neon
Graphics card: Intel HD Graphics 5000
Blender 2.80 Beta
In Archmesh, although the walls are well defined at a height of 0, the lights pass through the walls, ceilings or floor. This causes the reflections of light from the continuous floor to be reflected in the room on the side. It is logical that this happens in doors and windows, but not in walls, floor and ceiling.