collectionViewContentSize in iOS 10 using self-sizing cells

Question

Prior to iOS 10, I had a self-sizing table view that solely consisted of a UICollectionView with self-sizing cells using a standard UICollectionViewFlowLayout. The collection v

Answer 1

This is some strange bug in iOS10 with iPhone Plus devices only. I've faced the same issue, my solution was to call layoutIfNeeded like this:

func numberOfSections(in collectionView: UICollectionView) -> Int {
    collectionView.layoutIfNeeded() // Patch: only to solve UIKit crash on Plus models
    return 1
}

Doing the same thing in different UICollectionViewDataSources methods will work as well