They don’t.
Programs only show themselves when you take an action (hit a key) or when it’s urgent (in a notification).
Otherwise they’re supposed to stay invisible.
So in Gnome philosophy, your sensor would notify you when the temp goes critical and otherwise you’d have to open it manually.
Ok but how do programs under Gnome display state? (temperature and stuff like that)
They don’t.
Programs only show themselves when you take an action (hit a key) or when it’s urgent (in a notification).
Otherwise they’re supposed to stay invisible.
So in Gnome philosophy, your sensor would notify you when the temp goes critical and otherwise you’d have to open it manually.