Comment 8 for bug 1893969

This video shows litter at the cursor when using Swiper for Emacs search. Note near the top left of the screen, while the search string "bitwise" is being typed in at the bottom, that the first match (the word Bitwise in \subtitle{Bitwise Operations}) does not correctly repaint, with echoes of the cursor being left behind as it moves across the word.

This is the Ubuntu-installed Emacs 1:26.3+1-1ubuntu2, using Swiper installed from ELPA; however, this sort of corruption shows up in a variety of cases in Emacs (this is just the most reliable method I know to trigger it).

Compton is NOT running in this test. Xorg is modesetting. Kernel is 5.4.0-42-generic.

Firefox just glitched significantly while looking up how to reliably determine my Xorg server module, I will upload a video of that, as well.