I'm experiencing this bug as well. I have "Move right" bound to Super+Tab. Only pressing one of the following keys will remove the preview after switching workspaces:
Esc
Enter
Caps Lock
Num Lock
Shift
Ctrl
Alt
Ubuntu 12.04 32bit
Upgraded from 11.10
Linux 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:33:05 UTC 2012 i686 i686 i386 GNU/Linux
I'm experiencing this bug as well. I have "Move right" bound to Super+Tab. Only pressing one of the following keys will remove the preview after switching workspaces:
Esc
Enter
Caps Lock
Num Lock
Shift
Ctrl
Alt
Ubuntu 12.04 32bit
Upgraded from 11.10
Linux 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:33:05 UTC 2012 i686 i686 i386 GNU/Linux