When you press back button on Smartphones the app goes out. It is a little annoying because most of the time I press it accidentally or when im writing and press back to hide the keyboard the app again goes out too.
An alert pop up asking if you want to disconnect also will work.
nope, you can disable the back button or make it "press again to exit" quite easily (App Cloner allows you to do that on any app.) its just the developers not doing it for whatever reason