If you turn off bluetooth, it will show bluetooth active icon.
If you turn on bluetooth, it will show bluetooth disabled icon.
If you connect to a bluetooth earphone, the indictor icon won't change immediately. Only when you press Alt+F2/enter r to reload GNOME shell (X11), then the icon will change to bluetooth connected icon.
And when you disconnect the bluetooth earphone, the indictor icon won't change, it still show the connected icon untill you reload GNOME shell by pressing Alt+F2, enter r.
It seems the bluetooth indicator is not working properly.
If you turn off bluetooth, it will show bluetooth active icon. If you turn on bluetooth, it will show bluetooth disabled icon. If you connect to a bluetooth earphone, the indictor icon won't change immediately. Only when you press Alt+F2/enter r to reload GNOME shell (X11), then the icon will change to bluetooth connected icon. And when you disconnect the bluetooth earphone, the indictor icon won't change, it still show the connected icon untill you reload GNOME shell by pressing Alt+F2, enter r.
It seems the bluetooth indicator is not working properly.
My OS: Ubuntu 22.04, GNOME 42, X11