troubles with menus and the "Undisplay" function is not working

Hello,
sorry to bother you, but I just installed Ubuntu on ddd debugger, I began
to use and I noticed a lot of problems related to the menu display.

when I click on a menu, I have bits of it that appear from time to time,
without knowing why.

Also, as you'll see in the video that I made, the *"Undisplay"* does not
work, because even after a refresh, the items that I put are still there.

here is the video

https://docs.google.com/open?id=0BxGDwm2xs-VDc0tMRDQ3c3pXNjA
could you help me ?

info : DDD - GNU DDD 3.3.12 (x86_64-pc-linux-gnu)


Thanks.
Mathieu Tarral

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