[Bug 13818] New: Yahoo! Messenger 9.0 beta installer crashes in ntdll when changing window focus

http://bugs.winehq.org/show_bug.cgi?id=13818

Summary: Yahoo! Messenger 9.0 beta installer crashes in ntdll
                    when changing window focus
           Product: Wine
           Version: CVS/GIT
          Platform: PC
               URL: http://messenger.yahoo.com/download/win/
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=13865)
 --> (http://bugs.winehq.org/attachment.cgi?id=13865)
Yahoo! Messenger installer backtrace

With Wine version wine-1.0-rc4-29-g035f1dd, after the installer finishes
downloading installation files, if I change the focus between the installer
window and another window around the 6% mark, the installer crashes in
HEAP_CreateFreeBlock in ntdll. If I do not remove focus from the installer
window during the installation, no crashes occur. Backtrace is attached.