Coming from Ubuntu with Gnome3 I miss some of my icons in the application indicator icon part of the panel. Like Signal messenger icon, Discord, Tunderbird (with new mail), Nextcloud, Spotify and some others. A few working as expected, like Steam, Telegram … Thought, this is a Gnome-thing.
How can I bring them back?
Hi @HansD 
I don’t use gnome, but these things i assume, can be solved with extensions like:
https://extensions.gnome.org/extension/615/appindicator-support/
Ty (again), 
this is already installed by default and seem to be up to date. Some Indicators working, some not. The Version for Ubuntu is the same and working like expected. Weird.
are electron apps. Seems there is a problem with them with latest Gnome (still open since 2017):
Maybe thunderbird needs a addon to work?
Keep also sure all libs are installed:
pamac search --no-aur indicator | egrep "^lib"
Good point. Now I wondering, why Ubuntu shows them. Neverrmind.
I’ll give XFCE a try now. 