I found a workaround: Use "Ubuntu 2D", "GNOME", or some other desktop environment besides the classic "Ubuntu" desktop environment on 12.04, and the problem fixes itself. The problem obviously deals with Unity.
I found a workaround:
Use "Ubuntu 2D", "GNOME", or some other desktop environment besides the classic "Ubuntu" desktop environment on 12.04, and the problem fixes itself. The problem obviously deals with Unity.