We are also experiencing an app crash issue in the viewForSupplementaryElementOfKind method: func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView { switch kind { case UICollectionView.elementKindSectionHeader: let headerView = collectionView.dequeueReusableSupplementaryView( ofKind: kind, withReuseIdentifier: headerViewIdentifier, for: indexPath) return headerView case UICollectionView.elementKindSectionFooter: let footerView = collectionView.dequeueReusableSupplementaryView( ofKind: kind, withReuseIdentifier: footerViewIdentifier, for: indexPath) return footerView default: break } } As @KSmith95 mentioned, we also tried using supplementaryView, but it always returns nil and leading the app crash.