As it happens, I also have this king of lightning problem in my map. It occurred when I tried the "dynamic lightning" trick with the door, where you target and also close_target the light source so the light turns on only when door are opened. However when I copy the map to unmodified 'portals' folder, the bug disappears. So it may be something with my mod folder. Anybody ever experienced this and have any idea what may be the cause?
