[🐛] iOS: App crashes as soon as notification is received in foreground or clicked in background about react-native-firebase HOT 1 OPEN

Very unexpected. So those lines are where we call the original notification handler delegate - if you receive a message and there was a messaging delegate configured before firebase

the original delegate is saved here, during RNFBMessaging setup:

The best thing I can think of is that WebEngage (which can apparently do mobile push notification things...) is installing a delegate, and somewhere between iOS notification center, react-native-firebase code and WebEngage code there is an issue with the typing of the message received or the message receiver. [1]

• [1] - https://developer.apple.com/forums/thread/721853?answerId=739859022#739859022

No one else has posted a crash like this before and I believe our code is just a) saving the original delegate, b) sending the original message to the original delegate so I think react-native-firebase is doing things correctly here but the problem is in the "forwarding code" which we saved and are calling.

What happens if you take out WebEngage temporarily as a test?

from react-native-firebase.