Gamecenter login crash since 16.4.1

Unity Engine
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Trying to figure out a mysterious crash that is now the highest occurring hard crash on iOS devices.

Crashed: com.apple.root.user-initiated-qos.cooperative
0 GameCenterFoundation 0xe2054 __swift_project_boxed_opaque_existential_1 + 19952
1 libswift_Concurrency.dylib 0x41948 swift::runJobInEstablishedExecutorContext(swift::Job*) + 416
2 libswift_Concurrency.dylib 0x42868 swift_job_runImpl(swift::Job*, swift::ExecutorRef) + 72
3 libdispatch.dylib 0x15944 _dispatch_root_queue_drain + 396
4 libdispatch.dylib 0x16158 _dispatch_worker_thread2 + 164
5 libsystem_pthread.dylib 0xda0 _pthread_wqthread + 228
6 libsystem_pthread.dylib 0xb7c start_wqthread + 8

Unity 2023.3.16f1, we haven’t changed our gamecenter login code (using Social.localUser.Authenticate) in ages so unsure why this would have started now.

There were scattered reports of this bug before this date but it looks like it became common during the release of 16.4 on March 27th our reports on this bug start to rise and haven’t stopped rising since.

I think something must have changed about GameCenter in iOS 16.4 but I’m not sure what.

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Also need assistance on same issue.

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Same issue here on our side, also cross posting here too in case someone from apple respond Gamecenter related crash in Unity | Apple Developer Forums

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Yeah no update other than it continues to happen and continues to only be a 16.4 issue.

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Hello everyone, we are facing exact the same issue (Unity 2021.3.11) and because there are no responses ether from Unity and Apple, I think at this point we can try to figure out what exactly goes wrong:

  • Do you use UnityEngine.Social?
  • Do you have Game Center capability in xcode project?
  • Did you try to update to Unity 2021.3.24?
  • *Facebook SDK and version? - *incorrect question from FB iOS SDK sources I don’t see any usages of GK SDK.
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  1. Yes
  2. Yes
  3. Next release will be going out with the latest Unity LTS (currently .25f1) but it is 2021.3.16f1 currently
  4. The facebook SDK is version 14.0.0
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Thanks for answer! I’ve also added some possible fixes, didn’t help.

From my point of view this is UnityEngine.Social side issue, which is not a package, so only thing we can do is try to update Unity or replace UnityEngine.Social with Apple package - https://github.com/apple/unityplugins

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I don’t think this is coming from unityengine.social, we don’t use it and the crash is still happening. We do use GameCenter though

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@ernesb If you aren’t using the UnityEngine.Social implementations how are you accessing the gamecenter code? Through the newer Unity apple plugin or via a custom solution?

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custom solution, we write our own game center login integration natively and it worked for years, it just started going bonkers on 16.4.1 ios updates

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Ok that definitely makes it seem like it’s a problem on Apple’s side?

Does it repro if you make a default project with the plugin in it? Maybe we can use that to bug report to apple.

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For people following this with the release of iOS 16.5 it seems like whatever was the problem was on Apple’s side and is fixed. Still seeing the crash on 16.4.1 devices but only on 16.4.1 and the total rate has gone down significantly.

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