I jusut stumbled upon this wierd issue where some faces on mesh are black and when I move the mesh it seems the area where the faces are black is like in area that blakens everything that passes that area. Also when I change emission from my shader it seems that the color is linked to that though it should not be since I use only basic prinsible shading only change is the color white nothing else. I tested to remove all from the scene, but that doesn’t help. also when I take render of the area it doesn’t come into the render it is only visible in other modes, but can’t be rendered out ???
Also as you see normals are facing right way, but even when I change normals to inside it doesn’t change anyhting. It seems like there is some invisible hovering mesh that keeps interfere with the mesh, but it can’t be seen or deleted or anything ??? Without answers to this problem to me it seems this is a bug of the latest release 2,91 which I downloaded 2 days ago.