In Services -> Foreground, I have this option checked to keep a persistent notification running. However, randomly the notification will disappear. The service is still running, and Join functions as it is meant to (so I don't believe Android is killing it - I also have a lot of RAM still free), but the persistent notification does not appear. Even unchecking and rechecking the option does not make it come back. It's been like this for a while, I just haven't thought to post about it until now.