title: Large navigation title bar is hidden by default
body: <p>Large navigations bars were displayed by default but it suddenly changed to smaller title, probably in a recent update. I'm experience this issue with <code>UICollectionViewController</code> even though to confirm, I add the following code to the <code>viewDidLoad</code> method.</p>
  
  <pre><code>self.navigationController?.navigationBar.prefersLargeTitles = true
  self.navigationItem.largeTitleDisplayMode = .always;
  </code></pre>
  
  <p>Any leads appreciated! :)</p>