I'm trying to figure out if this is the expected behavior or not.
I've got a Forms app with the OneSignal SDK installed for Push Notifications. I receive the notifications correctly on my Galaxy S7 while the app is open or in the background. When I tap the notification, the MainActivity in the application is created again, then my App constructor is run and my whole application is initialized a second time. If I hit the back button, I get dropped back to the previous Activity in the app that was already running.
Is the expected behavior of tapping a Push Notification on Android to open a new instance of your App? I would have thought it would just resume the instance that is already running.