Minimized App icons not showing in Panel

[Aravisian]

@ArfurM

I have just run into this problem; the Gnome shell restart worked for me. The tray icons have been working since I built my Zorin 16 Pro system, then.. just stopped in the last week.
One other observation: Every time I open an app that has a tray icon, I have to restart Gnome shell to make it appear.

This is appearing less like troubleshooting and more like feedback.