[Bug 54156] New: comctl32:edit & user32:edit - test_paste() sometimes gets an empty string on Windows

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54156

Bug ID: 54156
           Summary: comctl32:edit & user32:edit - test_paste() sometimes
                    gets an empty string on Windows
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: comctl32
          Assignee: [e-mail]
          Reporter: [e-mail]

comctl32:edit - test_paste() sometimes gets an empty string on Windows

edit.c:3238: Test failed: got 0

See https://test.winehq.org/data/patterns.html#comctl32:edit

This happens on Windows 10 1809 to 21H2 a bit less than 3 times per month.

Where 0 is the length of the string in the field we pasted to. So that field is
empty instead of having received the string we pasted.

We can also get this failure in user32:edit (2022-11-15 w10pro64v1809):

edit.c:3211: Test failed: got 0

See https://test.winehq.org/data/patterns.html#user32:edit

But the case above is for the single-line to single-line case and there is also
the same issue happening in the multi-line to multi-line case (2022-10-25
w11pro64-amd):

edit.c:3240: Test failed: got 0

So it's a pretty general, if rare (only 4 known instances in 6 months),
problem.

Note that while one could expect this to be caused by yet another
OpenClipboard() failure, like in bug 53276, there is no failure message
indicating this to be the case.