there are various forum and askubuntu threads about this issue already as well:
https://forum.snapcraft.io/t/ui-glitch-after-recent-update/15133
https://forum.snapcraft.io/t/some-snaps-app-have-weird-looking-window-control-and-fonts/17859
https://askubuntu.com/q/1206868/66509
https://discourse.ubuntu.com/t/odd-close-button-with-snaps/19392
there are various forum and askubuntu threads about this issue already as well:
https:/ /forum. snapcraft. io/t/ui- glitch- after-recent- update/ 15133
https:/ /forum. snapcraft. io/t/some- snaps-app- have-weird- looking- window- control- and-fonts/ 17859
https:/ /askubuntu. com/q/1206868/ 66509
https:/ /discourse. ubuntu. com/t/odd- close-button- with-snaps/ 19392