Weird RGB overlay on materials

So I made a build of my game to test some stuff and some of the materials have this weird RGB overlay on them. It looks like a UV map, but not the actual UVs of the meshes, just object coordinates. Does anyone have an idea of how I could fix this? I will be checking replies regularly so feel free to ask questions about the problem, I can provide more images if necessary.

This only happens in the build, not in the Unity editor.

Well, I fixed it by using an older version of Unity. I still don’t know what went wrong, but at least I can get around it