[Bug 47894] New: mfreadwrite error dialog causes the user32:winstation tests to fail

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=47894

Bug ID: 47894
           Summary: mfreadwrite error dialog causes the user32:winstation
                    tests to fail
           Product: Wine
           Version: 4.17
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: mfplat
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

When mfreadwrite is not present, a dialog appears, which seems to cause the
user32:winstation tests to fail:

https://test.winehq.org/data/b360cd67e8f7f8c01f09457bacb032fd4a248d0a/2008_n...

Sometimes it disappears just in time, in which case the tests succeed:

https://test.winehq.org/data/b360cd67e8f7f8c01f09457bacb032fd4a248d0a/2008_n...

I'm not sure whether to file this under user32 or mfreadwrite.