Missing icon for xfce4-pulseaudio-plugin in systray
I found surprisingly few references to people having the same issue, so this probably doesn't affect everyone.
OS: Fedora Silverblue (Universal Blue - Vauxite) Chicago95 installed using the installer in a virtualenv
The audio-volume-*.png icons are missing from ~/.icons/Chicago95/status/symbolic/ directory, causing the "missing-asset"/default icon to be shown in the systray for the pulse audio volume control applet instead of the speaker icon.
A fix for this is to copy the audio-volume-*.png icons from ~/.icons/Chicago95/status/16/ to the symbolic directory and reload xfce4-panel:
[user@localhost ~]$ cp ~/.icons/Chicago95/status/16/audio-volume-*.png ~/.icons/Chicago95/status/symbolic/
[user@localhost ~]$ xfce4-panel -r
After this the volume applet icon is displayed properly. The other icons in the symbolic folder seem to be 16x16 too, so I assume that's the correct size.