[Bug 54173] New: Observer (original version): crashes on the first video

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54173

Bug ID: 54173
           Summary: Observer (original version): crashes on the first
                    video
           Product: Wine-staging
           Version: 8.0-rc1
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Keywords: regression
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail]
      Distribution: ArchLinux

Created attachment 73694
  --> https://bugs.winehq.org/attachment.cgi?id=73694
terminal output

This was tested with the original version of the game Observer which is
superseded by the System Redux version and the original version is no longer
available to purchase. Other games may also be affected, so I'm reporting the
bug here.
Steam store page:
https://store.steampowered.com/app/514900/observer/

The game crashes as soon as the first intro video/developer logo is about to
play.

The crash doesn't happen in vanilla Wine-8.0-rc1 and it was not a problem with
Wine-7.22 Staging.

The patch from Staging causing the issue:

0a508df02606e2ec49c7747926c5ab9e082a8223 is the first bad commit
commit 0a508df02606e2ec49c7747926c5ab9e082a8223
Author: Derek Lesho 
Date:   Fri Mar 19 17:01:54 2021 -0400

winegstreamer: Report streams backwards in media source.

Disabling mfplat.dll works around the crash (in-game videos are missing too,
obviously).

wine-8.0-rc1-75-g17e5ff74308 (Staging)