Created attachment 117771 [details]
When moving toolbars, artifacts appear (see attachment to get a better understanding of the issue). The window moving effect only appears when placing the mouse over the zone to embed toolbars and not when I put the mouse over the zone where a small Writer icon appears.
Running Debian Wheezy (64 bits) on nvidia nvs 440 card with propietary drivers (304.125).
It looks very similar to Bug 90376.
*** This bug has been marked as a duplicate of bug 90376 ***