Please describe the problem:
When opening a menu in the main bar ("Movie" etc) and leaving it again *without* 
selecting an entry (e.g. by clicking into the viewing area or moving the mouse 
over one of the other entries in the menu bar), the respective menu is not 
cleared (i.e. stays on screen and is partly overlapped by the newly opened menu
), but *ONLY* if the background is *not* covered by a movie (i.e. the movie is 
not using up the whole viewing area)

Steps to reproduce:
1. Resize the movie (press 'T') to minimize it till it is well right of the 
rightmost menu bar entry "Help"
2. Open a menu ("Movie", "View") etc
3. Move the mouse over one of the other menu bar entries (i.e. leave the first 
menu open and do not click any entry in there)
OR
click into the viewing area


Actual results:
The area occupied by the menu - which is normally cleared when hovering over 
another main menu bar item - is not cleared, i.e. some remains of the menu stay 
on screen (sometimes partly overlapped by another open menu, depending on where 
the mousepointer is moved)

Expected results:
Clearing of the background

Does this happen every time?
yes, if the movie is small enough and until the window is minimized/shaded/
overlapped by another window or otherwise hidden and then shown again (this 
naturally cleans up the background)

Other information:
I do have a screenshot of the problem, if necessary :o)