I've noticed that PinballX has trouble switching between direct2bs and video backglasses. I have some Virtual Pinball tables setup on my cabinet that use direct2bs backglasses, while my Pinball FX tables just use videos. Many times when I go from a video backglass to a direct2bs backglass via the wheel interface, the last direct2bs backglass encountered will stay in foreground. Sometimes it'll fix itself, sometimes it'll persist. Maybe it has to do with window z-index competition or the direct2bs process not being killed correctly?