firebase_messaging: We are experiencing an application crash on iOS when a remote notification is received.

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Valutazione

Difficoltà
4/5
Tempo stimato
3-5 giorni
Idoneità per principianti
42/100
Tipo di issue
Bug
Chiarezza
Abbastanza chiara
Stato di attività
Attiva
Stack tecnologico
dart, firebase, flutter
Ambito
backend-api-design, mobile

Direzione di ricerca

Start by inspecting FLTFirebaseMessagingPlugin.m around line 518 and the application:didReceiveRemoteNotification:fetchCompletionHandler: callback, then trace how PushKit notifications reach it. The report lacks a complete dependency list and a minimal reproduction, so first compare the crash path with the plugin’s iOS notification handling and identify the failing message dispatch. Done means reproducing or isolating the crash and confirming a safe callback path with a regression test.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

Needs Attention type: bug
Is there an existing issue for this?
  • I have searched the existing issues.
Which plugins are affected?

No response

Which platforms are affected?

iOS

Description

[REQUIRED] Environment info

firebase-tools: Not applicable (Issue related to Firebase Messaging Flutter plugin).

Platform: iOS (Flutter application)

Firebase Messaging: firebase_messaging 15.0.4

Flutter version: 3.44.3

iOS version: 27.0.1

[REQUIRED] Test case

We are experiencing an application crash on iOS when a remote notification is received.

The crash occurs on the main thread inside the Firebase Messaging Flutter plugin, specifically in the following method:

-[FLTFirebaseMessagingPlugin application:didReceiveRemoteNotification:fetchCompletionHandler:]

The crash stack trace indicates that the failure occurs while UIKit/PushKit is processing an incoming remote notification payload.

[REQUIRED] Actual behavior

The application crashes on the iOS main thread while processing an incoming remote notification.

The crash occurs inside the Firebase Messaging plugin at:

FLTFirebaseMessagingPlugin.m:518

The top-level exception points to objc_msgSend, suggesting that an Objective-C message dispatch is failing during notification processing.

This issue appears to involve the interaction between Firebase Messaging and PushKit notification handling.

We would appreciate help identifying the root cause and understanding whether this is a known issue with Firebase Messaging's iOS notification handling.

Reproducing the issue

[REQUIRED] Steps to reproduce

Integrate Firebase Messaging into a Flutter iOS application.
Configure remote push notification handling.
Send or receive a remote notification through the configured PushKit/notification flow.
When iOS invokes the remote notification callback, the application occasionally crashes on the main thread.
Crash logs consistently point to FLTFirebaseMessagingPlugin.m, specifically the application:didReceiveRemoteNotification:fetchCompletionHandler: method.
[REQUIRED] Expected behavior

Firebase Messaging should safely handle incoming remote notification payloads without causing an application crash.

The notification callback should complete successfully, and the application should continue running normally.

Firebase Core version

3.3.0

Flutter Version

3.44.3

Relevant Log Output
Crashed: com.apple.main-thread
0  libobjcMsgSend.dylib
   objc_msgSend + 8

1  Runner
   -[FLTFirebaseMessagingPlugin application:didReceiveRemoteNotification:fetchCompletionHandler:]
   + 518 (FLTFirebaseMessagingPlugin.m:518)

2  UIKitCore
   -[UIApplication pushRegistry:didReceiveIncomingPushWithPayload:forType:withCompletionHandler:]

3  PushKit
   -[PKPushRegistry remoteUserNotificationPayloadReceived:completionHandler:]
Flutter dependencies
Expand Flutter dependencies snippet 

Replace this line with the contents of your `flutter pub deps -- --style=compact`.
Additional context and comments

No response

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