Created attachment 41349 [details]
Screenshot showing the problem
When using the Qt vclplug, the handle for moving a toolbar is displayed in the middle of the toolbar instead of on the left. (You still need to grab it on the left to move the toolbar around, so this is purely a display issue).
Which theme, please? Does it do when you switch the theme to another one?
Seems to be style related:
Happens with: Oxygen, MS Windows 9x
Doesn't happen with: Plastique, CDE, Motif
With Cleanlooks, everything is rather messed up and the toolbar handle isn't visible at all.