Due to a bug/glitch, I can't use Gnome Flashback for a while. I am forced to use the new Gnome 3 layout.
There are a few apps (Slack, Skype, Steam, KTorrent, Krusader, ...) that used to be minimized to a "tray icon" in the "task bar" or "notification area" or "indicator applet" or whatever, I am not quite sure about what the names are. It's the little icon somewhere in some bar which you can click to restore the app or show a menu.
In Gnome 3.26 (and later versions), there is no such area by default, and the apps, once minimized, disappear from GUI entirely. I can't see them anywhere, yet their process is running.
I am not going to criticize that decision (it's obviously a bad one :) ) and will skip to the questions:
How am I supposed to open such app?
How can I configure Gnome 3 to have that running apps icons area?
I have seen these (K)StatusNotifierItem/AppInicator Support and TopIcon Plus. Are these official? Or will it stop working in the next release as these workarounds tend to?