https://bugs.winehq.org/show_bug.cgi?id=22317
--- Comment #11 from Paul Gofman gofmanp@gmail.com --- (In reply to Paul Gofman from comment #10)
BTW this bug I came though just now looks closely related if not an exact duplicate: https://bugs.winehq.org/show_bug.cgi?id=11819#c37
SetViewport2 is also used here, so likely the difference in behaviour may be actually attributed to it as Octavian suggests there.