[Bug 42568] New: user32/tests/ msg.ok intermittent failure in SendMessage from other thread

https://bugs.winehq.org/show_bug.cgi?id=42568

Bug ID: 42568
           Summary: user32/tests/msg.ok intermittent failure in
                    SendMessage from other thread
           Product: Wine
           Version: 2.2
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: user32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

The following lines are sometimes printed when running the tests for msg.c:

msg.c:15837: Test failed: SendMessage from other thread 4: 0: the msg 0x0401
was expected, but got msg 0x0403 instead
msg.c:15837: Test failed: SendMessage from other thread 4: 1: the msg sequence
is not complete: expected 0000 - actual 0401
msg.c:15845: Test succeeded inside todo block: wrong status 00000000
msg.c:15849: Test succeeded inside todo block: SendMessage from other thread 5:
marked "todo_wine" but succeeds

This affects both of the test machines.