Created attachment 116570 [details]
Screenshot showing pixels copied from underlying window (before moving the corrupted window)
I'm seeing a wierd rendering problem where pixels from an unrelated window underneath (e.g. a terminal) are copied into part of the background of the "Insert Indexes & Tables" dialog when it first opens.
This happens for me using 184.108.40.206.beta1 but *not* in any earlier version. It's hard to see how LO by itself could do this even if it wanted to; maybe something it is doing differently now tickles an X.org bug ... ? FWIW, Ubuntu uses a compositing window manager.
==> Please see the attached screen-shot.
STEPS TO REPRODUCE:
1. Open attached "new.odt" document.
2. Place cursor below the paragraph which says "INSERT TABLE ... BELOW HERE"
3. Insert->Indexes and Tables->Indexes and Tables...
(it seems to depend on the positioning of the windows; it happens most often if the main window is the full height of the monitor, and about in the middle of the screen)
*** This bug has been marked as a duplicate of bug 91393 ***