Comment 14 for bug 152493

Correction to my prior comment: When I mouse-over the controls, the grey bar appears every 1 to 5 times. Never more than 5 tries before the bar appears.
Another observation: When I un-maximize the window, as I said, I can mouse-over as many times as I want and it won't cause the grey bar to appear. This is true even when I stretch the size of the window to its full extent as though it were maximized, but still not in "maximized" mode. That makes me suspect that the problem is not in the nVidia driver, because I find it hard to believe that the driver would know whether the state of the window is maximized or not. I haven't studied the compiz code at all on this matter, but it's my hunch that maximizing/un-maximizing a window is the function of the window manager, not the graphics hardware driver. In any case, this observation should be another clue to the developers. Also, usually the grey bar disappears and the colored title bar restores to normal when I pull the mouse pointer off of the controls. However, sometimes I can pull the pointer off of the control and some or all of the bar remains. I can mouse around the window and the grey bar stays, until I mouse over the controls again and move off, then the bar disappears. So, sometimes the bar has persistence until the next mouse-off event.