In order to reproduce the bug just press Alt and grep an icon of a toolbar and try to drag and drop it to another position in the toolbar. During dragging a shape is visible but you can't drop the icon at another position.
See also https://issues.apache.org/ooo/show_bug.cgi?id=34073.
As far as I have an overview it should also be possible to move an icon without pressing the Alt key. But there may be circumstances where this is not possible.
Hmm, this has never worked as far as I remember.. ?
Set it as an enhancement - thanks!
should be set as enhancement of course
This is the same as bug 34771 suggests
*** This bug has been marked as a duplicate of bug 34771 ***