Doesn't it show a system tray icon? (I don't use discord on Windows, or a system tray myself) - is a system tray icon not adequate? I believe it would show 24/7 wouldn't it?
It would be like on my phone the big red End Call button would not end the call, just minimize the app and put a small gray icon on the top-bar section.
Windows has also been hiding all system tray icons for over 2 decades at this point, unless the user specifically unhides that application.