Windowblinds always had problems with this app (previously known as Microsoft Navision), but the latest version (v5) fixed almost all the problems except the vertical scrollbar.
It seems that windowblinds forgets to paint it, as open windows that overlap the scrollbar when closed leave their image there.
I've tried to exclude scrollbar skinning but unfortunatelly only if I exclude the whole app, the scrollbar appears again.
Any ideas?
Michael.
