Hello, i use gnome and steam with Big Picture mode. For some reason, the Steam overlay doesn't open on top of the game when I press Shift+Tab or the Home button on the gamepad. Also, achievement notifications don't appear, although there is a sound when I receive them. Disabling the "Render using GPU" feature in Steam solves the problem, but then Steam itself runs terribly slow. The strangest thing is that this problem doesn't exist on KDE. How can I get it to work with Gnome?