[Bug 21455] New: Installation Path in SteamInstall.msi cannot be changed

http://bugs.winehq.org/show_bug.cgi?id=21455

Summary: Installation Path in SteamInstall.msi cannot be
                    changed
           Product: Wine
           Version: 1.1.36
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=25835)
 --> (http://bugs.winehq.org/attachment.cgi?id=25835)
Screenshot of the Dialog

For some mysterious reason one cannot change the Installation Path in
SteamInstall.msi.
It's not due to a spoiled wineprefix, as i tested and reproduced this behaviour
with a clean prefix.
The Icons in the Filedialog are missing as well.

Terminal output is not attached, as the only thing i get are two fixme's at the
very start of "msiexec /i SteamInstall.msi", and i highly doubt it's related to
the bug:
  fixme:advapi:LookupAccountNameW (null) L"nil" (nil) 0x32f390 (nil) 0x32f394
0x32f388 - stub
  fixme:advapi:LookupAccountNameW (null) L"nil" 0x156928 0x32f390 0x155ea0
0x32f394 0x32f388 - stub

A Screenshot of the actual Dialog is attached