[Bug 51392] New: user32:monitor breaks user32:win

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51392

Bug ID: 51392
           Summary: user32:monitor breaks user32:win
           Product: Wine
           Version: 6.10
          Hardware: x86-64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: user32
          Assignee: [e-mail]
          Reporter: [e-mail]

Running user32:monitor before user32:win causes the following set of three
failures:

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

win.c:7155: Test failed: Test 1: expected (-8,-8)-(1032,776), got
(-8,-8)-(1028,772)
win.c:7155: Test failed: Test 6: expected (-8,-8)-(1032,776), got
(-8,-8)-(1028,772)
win.c:7155: Test failed: Test 8: expected (-8,-8)-(1032,776), got
(-8,-8)-(1028,772)

The values change a bit but we consistently get +4 instead of +8 for the bottom
right corner.

In isolation this is 100% reproducible on w7u, w8, w864, w1064v1507,
cw-rx460-1507 and w1064v1607, even when waiting for 10 second between tests.
But for some reason in WineTest this only happens systematically on
cw-rx460-1507.

Also newer Windows 10 versions are not impacted.