UICollectionViewCompositionalLayout fails to size cells correctly if estimated dimension is bigger than actual size

Number:rdar://FB9809475 Date Originated:12/14/2021
Status:Open Resolved:
Product:UIKit Product Version:
Classification: Reproducible:
When using a `UICollectionView` with a `UICollectionViewCompositionalLayout` initialized with group or item with an estimated dimension greater (e.g. 1000) than the actual cell size (e.g. 100), then the layout fails to use the correct size: it uses the estimated size instead of the actual size, resulting in a broken layout.


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