It's kind of annoying to have to turn off a sub mix if it is overlaying your output window to get to the GUI windows when in full screen.

Example: Mix 1 is on output 1 at full screen doing an edge blend with mix 2 that is at full screen on output 2. When I try to get to anything else besides the mix option for the current mixes that are up, I cannot get to them without turning off the mix covering that output.