[firebase_auth]: Crash when returning to the app after authorized with X

[AlexV525]

Is there an existing issue for this?

• I have searched the existing issues.

Which plugins are affected?

Auth

Which platforms are affected?

iOS

Description

A user has reported that the app has crashed several times when returning to it after being authorized with X in the web tab. The unstable network condition could be somehow affected because the user has reported that a VPN is being used during the process.

Reproducing the issue

1. Start the authentication flow with the TwitterAuthProvider.
2. Authorized, and returning the app.
3. After a few seconds, the app crashes.

The pseudo code I was calling:

Future<void> _startAuth() async {
  final provider = TwitterAuthProvider();
  provider.setCustomParameters({
    'scopes': 'users.read offline.access',
    'lang': 'en',
  });
  final credential = await _$.signInWithProvider(provider);
  final idToken = await credential.user?.getIdToken();
  if (idToken == null) {
    return;
  }
  // Making HTTP requests with `idToken`.
}

Firebase Core version

3.13.0

Flutter Version

3.27.4

Relevant Log Output

See the attached crash log.

Flutter dependencies

Expand Flutter dependencies snippet

dependencies:
- firebase_auth 5.5.2
- firebase_core 3.13.0

transitive dependencies:
- firebase_auth_platform_interface 7.6.2
- firebase_core_platform_interface 5.4.0

Additional context and comments

Detailed information can be found in the log file.

Hardware Model: iPhone 14 (iPhone14,7)
OS Version: iPhone OS 16.7 (20H19)

crashlog_for_github.log

Searched related issues:

• [firebase_auth]: Microsoft Federated identity sign-in not working with Firebase MFA enabled authentication credentials/user in iOS platform #16929
• 🐛 [cloud_firestore] FIRESTORE INTERNAL ASSERTION FAILED #6927
• 🐛 [firebase_core] Firebase crashes on iOS #5856
• 🐛 [firebase_dynamic_links] iOS app crashes when users click on the dynamic link #4882
• FIRESTORE INTERNAL ASSERTION FAILED: QueryComparator needs to have a key ordering. (expected has_key_ordering) firebase-ios-sdk#7672
• Crash: LevelDB not created for Firestore with large data set  firebase-ios-sdk#4333

[MichaelVerdon]

Hey there, are you able to reliably reproduce this? If so, would you be able to send a full MRE over for further investigation?

[AlexV525]

Hey there, are you able to reliably reproduce this?

Not from my side but the client said it happens 1/10~2/10.

would you be able to send a full MRE over for further investigation?

You mean my development environment? macOS 15.3.2, Xcode 16.2, iOS deployment target 15.5.

[MichaelVerdon]

Hey there, are you able to reliably reproduce this?

Not from my side but the client said it happens 1/10~2/10.

would you be able to send a full MRE over for further investigation?

You mean my development environment? macOS 15.3.2, Xcode 16.2, iOS deployment target 15.5.

Hi there, I meant a full code example or a repo showing how you implemented it. Do you also know what devices these users were using?

[AlexV525]

@MichaelVerdon

I meant a full code example or a repo showing how you implemented it.

Sorry, but below (as previously said) was basically all necessary code:

Reproducing the issue

1. Start the authentication flow with the TwitterAuthProvider.
2. Authorized, and returning the app.
3. After a few seconds, the app crashes.

The pseudo code I was calling:

Future _startAuth() async {
final provider = TwitterAuthProvider();
provider.setCustomParameters({
'scopes': 'users.read offline.access',
'lang': 'en',
});
final credential = await _$.signInWithProvider(provider);
final idToken = await credential.user?.getIdToken();
if (idToken == null) {
return;
}
// Making HTTP requests with idToken.
}

Setup the provider, call authorization, and get the idToken.

---

Do you also know what devices these users were using?

As previously described:

Detailed information can be found in the log file.

Hardware Model: iPhone 14 (iPhone14,7) OS Version: iPhone OS 16.7 (20H19)

crashlog_for_github.log