Hello, My question is about applications which typically start automatically and which you’d like to keep running. Think chat, file backup, etc… When running Ubuntu this would work as follows: once the application window was open I could click the “x” button to close the window. This would close…

Keep application running (e.g. chat, backup) upon "close"

Caliga March 13, 2019, 2:40pm 2

One of the reasons why I prefer KDE Plasma
With Gnome you need a plugin like TopIcons.
Look here: