FCM - notifications are not delivered to android device (or not showing up) when app isn't opened/interacted with for a couple of hours.

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kane....@gmail.com

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Nov 6, 2021, 8:04:09 PM11/6/21

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Hello,

We have noticed that on android devices, if app was either closed or in the background for a couple of hours push notifications stop being delivered (or maybe they are delivered and ignored by the system).

Tested on multiple independent devices. Sending from firebase console also doesn't get push notifications delivered.

After app is opened, notifications magically start working (using same FCM registration token).

More people could reproduce it here: https://github.com/FirebaseExtended/flutterfire/issues/6956, but I don't think it's related to flutter.