http://bugs.winehq.org/show_bug.cgi?id=11936
--- Comment #9 from Reece Dunn msclrhd@gmail.com 2008-05-28 17:20:49 --- Not sure on the validity of this, but looking at the screenshots, it looks as if the dialogs are off by the height of the title bar. Therefore, my guess would be that there is an issue in the AdjustWindowRect API.
Does anyone know if this is reproduced when Wine manages the window frames (either directly or in a virtual desktop)?
Also, Firefox looks like a good candidate for diagnosing this issue, provided someone knows what the XUL engine is doing in this case.