title: CollectionView reload data?
body: <p>I have a collection view to load a couple of photos just like Instagram posts but every time it reloads the data using <code>collectionView?.reloadData()</code>, all the photos in the collection view are rearranged. The order is showing in different positions in the collection view. When you refresh the data you can see the first photo in the first position. Go to the last position, then other photos are have also changed positions. This happens even if there is no change to the photo and all the photos are the same. I am wondering why it's happened like that?</p>