当单元格仍然显示时，UICollectionView中的大单元格被移除。

I have a UICollectionView that contains some large UICollectionViewCells. These cells are so large that they completely fill the UICollectionView bounds and extend off screen. The problem is that the large cells are removed from the UICollectionView and queued for reuse while they are still displayed, resulting in a blank view. If I continue scrolling on the blank UICollectionView area, eventually the final portion of the cell appears and the start of the next cell appears in exactly the right place. I've effectively disabled cell reuse and the problem still occurs apparently because the UICollectionView thinks that the cell is no longer displayed since no corner is within the bounds of the collection view. To demonstrate make a collection view that is a single column and have a cell that is 10000px tall, when scrolling over the very tall cell it will disappear after about 1000px of content is scrolled off the screen and will reappear to display the final 1000px of content for the cell. You can download a simple prototype app that displays this problem at: I have a UICollectionView that contains some la