Open Radar

 
Summary:
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I get a crash in the _isEquivalentTo method of UICollectionViewLayoutAttributes when transitioning from one layout to another. The crash occurs after prepareLayout gets called. The layout attributes are all instances of the base class, and NOT subclasses. In this case the transition is from a second layout back to the original layout using the UICollectionViewController's layoutToLayout transition in iOS 7. This works without issue in all previous versions of iOS 7, but now the crash above occurs as a EXC_BAD_ACCESS pointing to that method in the beta of iOS 7.1.

Steps to Reproduce:
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Tap the back button to transition back to the original layout. Crash.

Expected Results:
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Experience a smooth transition back to the original layout without a crash.

Actual Results:
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Regression:
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Notes:
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I haven't yet tried subclassing layout attributes to implement isEqual and hash methods. I am not sure if that would solve the problem or not.