Not working with Xcode 11.1 running on iPhone 11

[amrangry]

Not working with Xcode 11.1 running on iPhone 11

[amrangry]

Actually you need to call layoutIfNeeded() for TableViewCell
to take effect not the collection cell
BTW it tried your code example with Xcode11.1 on iPhone11 simulator

I update the answer on my fork repo

https://github.com/amrangry/DynamicHeightCollectionView