Mh, this makes things harder to fix... The fact is that the shell is not drawn when there are some fullscreen windows around, and that's fine... But compiz adds it back on top when a fullscreen window has no focus.
This means that to fix the issue we can both show the shell on top of these windows (not sure the best option), or make the shell not to take input in this scenario... And both of these cases are quite tricky to handle (especially the former).
Mh, this makes things harder to fix... The fact is that the shell is not drawn when there are some fullscreen windows around, and that's fine... But compiz adds it back on top when a fullscreen window has no focus.
This means that to fix the issue we can both show the shell on top of these windows (not sure the best option), or make the shell not to take input in this scenario... And both of these cases are quite tricky to handle (especially the former).