UICollectionViewCompositionalLayout unexpected behavior with .estimated heights

Originator:papantoniou.antonios
Number:rdar://FB9007429 Date Originated:Feb 16, 2021
Status:Open Resolved:No
Product:iOS 14 Product Version:
Classification: Reproducible:yes
 
Using `NSCollectionLayoutSize` with .estimated dimensions in horizontal orthogonal sections, creates layout issues. The cells & supplementary views have layout conflicts, the scroll behavior is suboptimal and spacing is not as expected

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