I did UICollectionViewCompositionalLayout with orthogonal section with groupPagingCentered as follow:
func neighborsRealitiesSection() -> NSCollectionLayoutSection {
	let itemSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1), heightDimension: .fractionalHeight(1))
	let item = NSCollectionLayoutItem(layoutSize: itemSize)
		
	let cellWidth = UIScreen.main.bounds.width / 3 + 1
	let groupSize = NSCollectionLayoutSize(widthDimension: .absolute(cellWidth), heightDimension: .absolute(cellWidth))
	let group = NSCollectionLayoutGroup.vertical(layoutSize: groupSize, subitems: [item])
		
	let section = NSCollectionLayoutSection(group: group)
	section.orthogonalScrollingBehavior = .groupPaging
		
	let inset = (UIScreen.main.bounds.width - cellWidth) / 2
	section.contentInsets = .init(top: 0, leading: inset, bottom: 0, trailing: inset)
		
	return section
}
If I adding the contentInsets to the section, collectionView won't stop scrolling on the penultimate cell. It will scrolling to the next cell. If I comment on contentInsets, it will be ok.
Why does it happen? Does anybody have this problem?
MikhailZimin
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I did UICollectionViewCompositionalLayout with orthogonal section with groupPagingCentered as follow:
func neighborsRealitiesSection() -> NSCollectionLayoutSection {
	let itemSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1), heightDimension: .fractionalHeight(1))
	let item = NSCollectionLayoutItem(layoutSize: itemSize)
		
	let cellWidth = UIScreen.main.bounds.width / 3 + 1
	let groupSize = NSCollectionLayoutSize(widthDimension: .absolute(cellWidth), heightDimension: .absolute(cellWidth))
	let group = NSCollectionLayoutGroup.vertical(layoutSize: groupSize, subitems: [item])
		
	let section = NSCollectionLayoutSection(group: group)
	section.orthogonalScrollingBehavior = .groupPagingCentered
		
	section.visibleItemsInvalidationHandler = { items, offset, environment in
		items.filter { $0.representedElementKind != UICollectionView.elementKindSectionHeader }.forEach { item in
			let distanceFromCenter = abs((item.frame.midX - offset.x) - environment.container.contentSize.width / 2.0)
			let minScale: CGFloat = 0.7
			let maxScale: CGFloat = 1
			let scale = max(maxScale - (distanceFromCenter / environment.container.contentSize.width), minScale)
				
			item.transform = CGAffineTransform(scale: scale)
		}
	}
}
The other sections are scrolled vertically. When scrolling vertically, the orthogonal offset is reset to zero. If I comment on the visibleItemsInvalidationHandler, it will not be reset.
Why does it happen? Does anybody have this problem?