title: Why on Xcode 11, UICollectionViewCell changes size as soon as you scroll (I already set size in sizeForItem AtIndexPath:)?
body: <p><a href="https://i.stack.imgur.com/IkZ80.gif" rel="noreferrer"><img src="https://i.stack.imgur.com/IkZ80.gif" alt="enter image description here"></a>  </p>
  
  <p>I have collectionview inside tableview cell and I use nib for my collection view cell (in which I use autolayout for my imageview and labels and it is on Freeform mode).  I'm setting cell size in tableviewcell class which is handling the delegate for collectionview inside it by this method:</p>
  
  <pre><code> func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -&gt; CGSize {
          return CGSize(width: 200, height :150)        
      }
  </code></pre>
  
  <p>It always works but after Xcode 11 it doesn't. </p>