[Bug 26693] New: Neverwinter Nights 2 installer window is obscured by installer background image

http://bugs.winehq.org/show_bug.cgi?id=26693

Summary: Neverwinter Nights 2 installer window is obscured by
                    installer background image
           Product: Wine
           Version: 1.3.17
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Keywords: Installer, regression
          Severity: normal
          Priority: P2
         Component: winex11.drv
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
                CC: [e-mail]

Created an attachment (id=33993)
 --> (http://bugs.winehq.org/attachment.cgi?id=33993)
Neverwinter Nights 2 +x11drv,+win log

When the installer for Neverwinter Nights 2 is launched on
wine-1.3.17-173-g6eed4c4, the installer window always appears under the
installer background image, which makes it impossible to perform the
installation. The window appears correctly in wine-1.3.16, and a regression
test indicates:

5ef58c11ce28c963908672f5c5c1fde866272ba5 is the first bad commit
commit 5ef58c11ce28c963908672f5c5c1fde866272ba5
Author: Dmitry Timoshkov 
Date:   Tue Mar 22 15:11:40 2011 +0800

winex11.drv: Do not use any window types except _NET_WM_WINDOW_TYPE_NORMAL.

Main window of the Atom Zombie Smasher game has WS_DLGFRAME style set,
    but Metacity allows making fullscreen ONLY normal windows, so do not
    use any window types except _NET_WM_WINDOW_TYPE_NORMAL.

:040000 040000 65ae9d82c83e54b32c7fa38754c5e5f4becd923c
96ed2dd11fbd04b352b0d6d7a42c9b88736b799f M    dlls

Reverting the commit makes the window appear correctly again. A +x11drv,+win
log is attached.