When using UICollectionViewFlowLayout's sectionHeadersPinToVisibleBounds = true in UICollectionView, UICollectionViewDataSourcePrefetching's func prefetchItemsAt indexPaths always repeats indexPaths, like:
collectionView(_:prefetchItemsAt:) [[0, 4], [0, 5], [0, 6], [0, 7]]
collectionView(_:prefetchItemsAt:) [[0, 4], [0, 5], [0, 6], [0, 7]]
collectionView(_:prefetchItemsAt:) [[0, 4], [0, 5], [0, 6], [0, 7]]
collectionView(_:prefetchItemsAt:) [[0, 4], [0, 5], [0, 6], [0, 7]]
collectionView(_:prefetchItemsAt:) [[0, 4], [0, 5], [0, 6], [0, 7]]
collectionView(_:prefetchItemsAt:) [[0, 4], [0, 5], [0, 6], [0, 7]]
collectionView(_:prefetchItemsAt:) [[0, 4], [0, 5], [0, 6], [0, 7]]
collectionView(_:prefetchItemsAt:) [[0, 4], [0, 5], [0, 6], [0, 7]]
When delete sectionHeadersPinToVisibleBounds = true (or set the value to false) array of indexPaths becomes correct in prefetchItemsAt indexPaths:
collectionView(_:prefetchItemsAt:) [[0, 4], [0, 5], [0, 6], [0, 7]]
collectionView(_:prefetchItemsAt:) [[0, 4], [0, 5], [0, 6], [0, 7]]
collectionView(_:prefetchItemsAt:) [[0, 8], [0, 9]]
collectionView(_:prefetchItemsAt:) [[0, 10], [0, 11]]
collectionView(_:prefetchItemsAt:) [[0, 12], [0, 13]]
collectionView(_:prefetchItemsAt:) [[0, 14], [0, 15]]
collectionView(_:prefetchItemsAt:) [[0, 16], [0, 17]]
Can you please tell me how to fix this?
