This is also an issue for me. When I play vlc on my tv with a fullscreen movie and at the same time bring the focus to an application on my other monitor (e.g. open firefox), the launcher and top panel become visible on my other monitor, on top of the fullscreen movie.
This is also an issue for me. When I play vlc on my tv with a fullscreen movie and at the same time bring the focus to an application on my other monitor (e.g. open firefox), the launcher and top panel become visible on my other monitor, on top of the fullscreen movie.