Text on shell elements is blank

[Brettins]

Expected behaviour: I can read text on notifications and popups in Ubuntu.

Observed Behaviour: Occassionaly, system overlays lose their ability to show text.

This affects the notification drawer, the sound icon, any popups, and the login screen.

It can be fixed by restarting Ubuntu.

Looks like this:
https://imgur.com/a/rvFuHHs

Description: Ubuntu 20.04.2 LTS
Release: 20.04

I am unable to determine what package shows these overlays.

I am using the dark theme from Gnome extensions, but switching back to light does not fix the issue.

Potentially relevant packages:

xorg:
  Installed: 1:7.7+19ubuntu14
  Candidate: 1:7.7+19ubuntu14
  Version table:
 *** 1:7.7+19ubuntu14 500
        500 http://ca.archive.ubuntu.com/ubuntu focal/main amd64 Packages
        100 /var/lib/dpkg/status

compiz:
  Installed: (none)
  Candidate: 1:0.9.14.1+20.04.20200211-0ubuntu1
  Version table:
     1:0.9.14.1+20.04.20200211-0ubuntu1 500
        500 http://ca.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        500 http://ca.archive.ubuntu.com/ubuntu focal/universe i386 Packages

notify-osd:
  Installed: (none)
  Candidate: 0.9.35+20.04.20191129-0ubuntu1
  Version table:
     0.9.35+20.04.20191129-0ubuntu1 500
        500 http://ca.archive.ubuntu.com/ubuntu focal/universe amd64 Packages

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1910938, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.