Thank you for prompt response! The layout code is following:   private func createLayoutforBottomCollectionView() -> UICollectionViewLayout {     let layout = UICollectionViewCompositionalLayout { section, enviroment in       let badgeAnchor = NSCollectionLayoutAnchor(edges: [.top, .trailing], fractionalOffset: CGPoint(x: 0.3, y: -0.3))       let badgeSize = NSCollectionLayoutSize(widthDimension: .absolute(20), heightDimension: .absolute(20)) let badge = NSCollectionLayoutSupplementaryItem(layoutSize: badgeSize, elementKind: ViewController.badgeElementKind, containerAnchor: badgeAnchor)       let itemSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1.0), heightDimension: .fractionalHeight(1.0))       let item = NSCollectionLayoutItem(layoutSize: itemSize, supplementaryItems: [badge])       let groupSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(0.21), heightDimension: .fractionalHeight(0.4))       let group = NSCollectionLayoutGroup.horizontal(layoutSize: groupSize, subitems: [item])       let section = NSCollectionLayoutSection(group: group)       section.contentInsets = NSDirectionalEdgeInsets(top: 5, leading: 5, bottom: 5, trailing: 5)       section.interGroupSpacing = 10       section.orthogonalScrollingBehavior = .continuous       return section     }     return layout   } Actually is the same as in the sample app "ImplementingModernCollectionViews" but I just added .orthogonalScrollingBehavior. I´ve tested it in a separate app with two sections and this was the result: My iOS is Big Sur 11.5.1