Comment 3 for bug 857983

This also leads the icon to not show up or work properly in the Unity launcher. It comes up with a generic question mark icon.

If you right-click and attempt to lock it to the launcher, it will jump to the top of the list by itself. If you then quit the program and try to run it from the pinned icon, it will fail to launch entirely (though the icon will glow as if it's going to launch).

I tested on quantal, but the result should be the same for precise and raring (identical source packages and therefore .desktop files).