https://bugs.freedesktop.org/show_bug.cgi?id=111730
--- Comment #5 from Edoardo Signorini edoars@gmail.com --- (In reply to Lionel Landwerlin from comment #4)
Could you us more details about your setup?
I assume you're not just running bare X11 with no window manager/compositor?
I'm running bspwm with compton. I didn't try to switch to another window manager but running without a compositor shows even more artifacts