[firebase_messaging] subscribeToTopic and unsubscribeFromTopic futures never end

[EArminjon]

Is there an existing issue for this?

• I have searched the existing issues.

Which plugins are affected?

Messaging

Which platforms are affected?

iOS

Description

The subscribeToTopic and unsubscribeFromTopic futures never complete.

Reproducing the issue

1. Run code bellow
2. See 'Before' in console
3. You will never see 'After' in console

print("Before");
await FirebaseMessaging.instance.subscribeToTopic('test');
print("After);

Firebase Core version

3.13.0

Flutter Version

3.29.3

Relevant Log Output

No log

Flutter dependencies

Expand Flutter dependencies snippet

  cloud_firestore: 5.6.7
  firebase_analytics: 11.4.5
  firebase_auth: 5.5.3
  firebase_core: 3.13.0
  firebase_crashlytics: 4.3.5
  firebase_storage: 12.4.5
  firebase_remote_config: 5.4.3
  firebase_messaging: 15.2.5

Additional context and comments

Devices :

• iOS 18.4.1, IPhone SE 2gen (real device).
• iOS 18.4, IPhone 16 pro (simulator).

[SelaseKay]

Hi @EArminjon, I'm unable to reproduce this issue with the firebase_messaging example app. What version of firebase_messaging are you using?

[EArminjon]

Hello @SelaseKay ,

firebase_messaging: 15.2.5

(You can find other firebase package version inside the main post -> Flutter dependencies)

[SelaseKay]

Hi @EArminjon, I suspect this could be from the flutter version. Could you try updating and test again?

[EArminjon]

Hi @SelaseKay,

Little error on my main post, i well use fluter 3.29.3 (main post edited).

The issue is easily testable using a simulator. On my real device it has disappear by magic (weird, i was able to reproduce on it also).