https://bugs.winehq.org/show_bug.cgi?id=40913
--- Comment #5 from Dmitry Timoshkov dmitry@baikal.ru --- (In reply to Alistair Leslie-Hughes from comment #4)
What happens if you don't call SetMapMode and/or SetViewportExtEx?
The SetArcDirection record isn't created.
That cases deserve their own tests then (in order to make sure that the record is being generated only when appropriate).