No worries, thanks.
I might be one of those users. Currently there is a chance that when I exit Dolphin in Big Box it gets stuck on a black screen. Similarly, when quitting a game on Mednafen it sometimes returns to an unresponsive menu screen. All I need to do is press a mouse button for it to snap back into place. Naturally, this doesn’t apply to LB since you’re not returning to an application that is in exclusive full screen mode as is the case with BB.
I believe the above is caused by Windows focus issues but that is anyone’s guess.