I am working on a project and have run into a lighting issue. So I made a simple structure to test things. This is an enclosed level consisting of a corridor and two rooms branching off left and right. The whole thing is made with the default engine cubes scaled appropriately.
The room lights are rect lights and Lumen is being used. Those lights are on their own level.
In the editor when without playing the level, if I hide the light level the scene is black.
However when I play the level and I use a switch to turn off all the lights, they go off but the scene does not go black, I get this: (There are no lights on in the right room where you see the lighter area in this image.) It is almost like these is a baked light in place but no baking is used.
However if I unload the level with the lights on it with the same switch then the scene goes black. All a bit weird.
Any input would be appreciated.