This fixed it for me. I'm sure there are millions of ways to fix this. All I did was resize the "minimized" Firefox window.
Turn on "Expo" under compiz settings. When you see Firefox all messed up, Hit "Special Windows Key" and "e" to see Expo effect. Drag the offending window downwards. Double click to return to normal view. Resize Firefox to something small. Now maximize it. Now the problem is gone.
OK,
This fixed it for me. I'm sure there are millions of ways to fix this. All I did was resize the "minimized" Firefox window.
Turn on "Expo" under compiz settings. When you see Firefox all messed up, Hit "Special Windows Key" and "e" to see Expo effect. Drag the offending window downwards. Double click to return to normal view. Resize Firefox to something small. Now maximize it. Now the problem is gone.
-glass.dimly