According to this, when the message is both a notification and data message and the app is in the background, the message is received as follows:
Notification: system tray
Data: in extras of the intent.
Which intent is it refering to?
From the Firebase Notification Console I sent a message with Custom data, ie with some Key/Value. Is this considered a combined Notification and Data message? My onMessageReceived event does not fire when the app is in the background. Only the notification shows in the Notification bar at the top.