Where is the lighting coming from? As you can see there are not light sources or anything else that could make it appear lit.
I just deleted everything from the map except that one mesh to figure out where the light is coming from when I have all lights turned off. Looks like there is some strange bug in the editor.
I don’t want anything unlit, I want my scene lit with the lights I put in the scene. Instead it was lit with light(s) that don’t even exist which must be a bug.