iOS 15.2: uncaught exception `NSInternalInconsistencyException`. Works in iOS 14.4

[roblabs]

FB9812333

Uncaught exception NSInternalInconsistencyException while reviewing Apple Sample Code for iMessage apps.

• Fails in Xcode 13.2 with an iOS 15.2 device & Simulator.
• Same sample code works on iOS 14.4 simulator.
• Same sample code works on Xcode 12.5 with an iOS 14.5 simulator.

There is a similar discussion found at iOS 15 crash at -collectionView:viewForSupplementaryElementOfKind:atIndexPath: on the Apple Developer Forums.

Expected

iOS 15.2 does not crash with Apple Sample Code.

Steps to reproduce

• Review the sample code Creating a Sticker App with a Custom Layout posted at developer.apple.com.
• Test with Xcode Version 13.2 (13C90)
• Build for iOS 15.2 Simulator or iOS 15.2 device
• See attached README-NSInternalInconsistencyException.png
• You will receive the following error in the log:

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Terminating app due to uncaught exception 'NSInternalInconsistencyException

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*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'the view returned from -collectionView:viewForSupplementaryElementOfKind:atIndexPath: does not match the element kind it is being used for. When asked for a view of element kind 'section-header-element-kind' the data source dequeued a view registered for the element kind 'Text'.' terminating with uncaught exception of type NSException CoreSimulator 783.5 - Device: iPad (9th generation) (DF4D17BA-6034-4771-9817-15D91DF3F23F) - Runtime: iOS 15.2 (19C51) - DeviceType: iPad (9th generation)

iOS 14.4 simulator works

While completing the same steps in an iOS 14.4 simulator, the Apple Sample code works.

• Test with Xcode Version 13.2 (13C90)
• Build for iOS 14.4 Simulator
• You can also test with Xcode Version 12.5 (12E262), which will only launch iOS 14.5 simulators. Sample code works.

[roblabs]

• Build and deploy from Xcode 12.5 via TestFlight to iOS 15.2 device works .
• Fails in Version 13.2.1 (13C100), released Dec 17, 2021.

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Also while researching, we found this comment at https://developer.apple.com/forums/thread/694494?answerId=696680022#696680022 with our emphasis added

With the information provided here, my best guess is that you are registering one element kind but then return another element kind. I.e. the element kind passed to you in viewForSupplementaryOfKind: is not the same element kind that is set on the cell when you return it / the identifier of what you are dequeuing is associated with a different element kind during registration of that class. This is an issue as it completely breaks reusability, so starting in iOS 15 this case is detected and asserted.