Note: I'm using Unity desktop on 18.04.
First, most of the icons in
unity-control-center are missing after I installed then uninstalled
I tried reinstalling all of the installed
unity* packages, still no result.
I resolved the problem by removing
export XDG_CURRENT_DESKTOP=Unity from my
.profile file and rebooting, however it leads to some applications' tray icons not appearing, for example the one for Discord, which I use frequently. Re-inserting that line resolved Discord's system tray, but then the Control Center problem comes back.
Question: How do I resolve these issues at the same time?