I recently updated to macOS Catalina (10.15.3), and the "volume adjust" bezel that pops up in the center of my screen when I adjust the volume via touch bar no longer looks correct. Specifically, it is missing the ticks that demarcate the volume level, instead just showing an empty bar. Other similar bezels (e.g., display brightness) have the same issue.
I have already tried restarting, as well as disabling the bezels entirely and then re-enabling them. Any other ideas how to fix this?