I have open Unity today with a weird bug happening. I can see pixelated noise (I don't know what else to call it), and restarting Unity or my Mac does not work. What can I do? It doesn't affect the game, this just shows in the Scene.
It indeed seems that it has something to do with the camera GameObject; when I remove the Camera the problem goes away. Re-creating the camera does not solve the problem.
It seems the problem goes away when setting the Camera setting "HDR" to "Off", but that still doesn't explain why it happens in the first place.