iOS 14 Regression Bug in UICollectionViewCompositionalLayout

Number:rdar://FB8724843 Date Originated:09-21-2020
Status:Open Resolved:
Product: Product Version:
Classification: Reproducible:Yes
Please provide a descriptive title for your feedback:
iOS 14 Regression Bug in UICollectionViewCompositionalLayout

Which area are you seeing an issue with?

What type of feedback are you reporting?
Incorrect/Unexpected Behavior

There is a regression bug with UICollectionViewCompositionalLayout in iOS 14 that does not appear in iOS 13.7.

Steps to reproduce:
1. Download the Apple sample code "Modern Collection Views" available at
2. Run the app in Xcode Version 12.0 (12A7209) and navigate to CompositionalLayout --> Conference App --> News
3. Notice that the cells are not laid out correctly.
4. Scroll and the cells will then be laid out correctly.


Looks like this is fixed in Xcode 12.2 beta (12B5018i) and iOS 14.2 Beta

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