FCM: Notification message wakes up android app

[justChris]

Hi guys

I am currently experiencing the situation that notification messages sent through FCM wakes an android app. This causes a false positive on showing a user being online.

I am using user presence via Firebase Realtime Database in connection with Cloud Firestore.
When an app has an open database connection (.info/connected == true), a cloud function sets a corresponding value in Cloud Firestore, which declares a user online. On the other hand, when the app is in background for a certain amount of time, that connection is lost, so .info/connected switches to false, which causes the user is shown as offline.

So when an android device receives a push notification via fcm, that client will be awoken. That causes the user being online.

Do you have any suggestions for me? Am I doing something tremendously wrong?

Thanks for you inputs.

Kind regards,
Chris