For now, just click the View -> Hide task bar icon, then close it.
1. This option will only prevent the window from popping up in front of your screen, but it will still be in the taskbar and in minimized mode.
2. This setting will only take effect during run time, once you reboot your primary machine, it will reset.
#1 seems to contradict its setting name “Hide task bar icon” so we might eventually fix it.
It should be hidden in the task bar and minimized it to tray.