[Bug 29787] New: [Diablo II] Flickering colors with software renderer after "Don't allow setting palette on non root surfaces."

http://bugs.winehq.org/show_bug.cgi?id=29787

Bug #: 29787
           Summary: [Diablo II] Flickering colors with software renderer
                    after "Don't allow setting palette on non root
                    surfaces."
           Product: Wine
           Version: unspecified
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

I use software rendering as workaround for bug #14348. I do this by:
LIBGL_ALWAYS_SOFTWARE=1 wine ~/.wine/drive_c/Diablo\ II/Game.exe

Unfortunately starting with abf8728e1f2f966650eaa5528a1f593a6e1986bb software
renderer doesn't work correctly anymore.
I've bisected this issue to:

abf8728e1f2f966650eaa5528a1f593a6e1986bb is the first bad commit
commit abf8728e1f2f966650eaa5528a1f593a6e1986bb
Author: Ričardas Barkauskas 
Date:   Mon Aug 8 01:26:00 2011 +0300

ddraw: Don't allow setting palette on non root surfaces.

Can I provide some additional info to help resolving this? Should I record game
behavior?