Description of problem: Firefox icons disappear from application launcher after upgrade. I tried erasing .local and .cache directories and starting desktop configuration from scratch but that didn't resolve. If I go into Launcher, edit applications I see the icon file, but they don't show on the desktop. This is affecting other random applications as well.
This bug appears to have been reported against 'rawhide' during the Fedora 34 development cycle. Changing version to 34.
Closing, no one seems to care.