If you exit sky safari for android, then open it again, every time you unlock the screen, the aplication reloads, as if you had closed it before the screen went black. This happens even if sky safari is the active application. The problem goes away after restarting the phone, but if you ever answer "exit" to the "exit application" window, then the problem starts happening again.
That's very annoying, specially if connected to the telescope. Fortunately, it seems like you can avoid it by never exiting the app.
I'm using android 7.1.1 on a moto z phone. Sky Safari 5 Plus.