Hakikid Amana

it is only happened in Android. I have just submitted a support ticket. Thank you.

I don't think our apps are creating multiple Flutter engines or running any background services. May I know about the error you're seeing? I suspect it might be related to...

Hi @fuzzybinary, after further investigation, I discovered that an additional Flutter engine instance is being created by Firebase Messaging. This occurs specifically within the [following code](https://github.com/firebase/flutterfire/blob/master/packages/firebase_messaging/firebase_messaging/android/src/main/java/io/flutter/plugins/firebase/messaging/FlutterFirebaseMessagingBackgroundExecutor.java#L137-L139).