Weird Coloured Cubes on Light Build

Hey there. I’m having this really weird artefacts when I build light on this scene.
Every time I build the light, these “cubes” changes location, they’re like a post process volume, whatever intersects them it gets this light.

Sometimes I remove some stuff from the scene and bake it again, then the entire level looks like a “negative filter”, light colours become dark and vice versa.
No idea what’s going on! Already deleted everything from it and it keeps forever, no matter how many levels I create it always shows up ion this file.