Duh! Sorry, works with a graphics-flush. Apparently the X properties test was effecting all the flushing that was required.
On Thu, 2020-07-09 at 08:58 -0700, Matt Birkholz wrote: > I don't see an arc in the x11 plugin's > test graphic, using master, also using > 10.1.11, probably also release-11 (but > I can't see any points either given that > the 300x300px graphic is very, very tiny > on a HiDPI screen). If a broken X11 > draw-arc op is a release breaker, I'll > try to get it fixed sooner.