[Bug 15549] New: Colobot Demo installer does not fully redraw installation window during install progress phase

http://bugs.winehq.org/show_bug.cgi?id=15549

Summary: Colobot Demo installer does not fully redraw
                    installation window during install progress phase
           Product: Wine
           Version: 1.1.5
          Platform: PC
               URL: http://www.ceebot.com/download/demo/colobotdemo17e.exe
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=16531)
 --> (http://bugs.winehq.org/attachment.cgi?id=16531)
Colobot Demo installer window screenshot

With today's Git (wine-1.1.5-507-ge20ef50), in the process of testing bug
13932, I noticed that when the installer is at the file copy progress phase,
some elements of the window are not redrawn properly. A screenshot is attached.