title: Navigationbar not displaying in UItableviewcontroller in storyboard
body: <p>i created a <code>UICollectionviewcontroller</code>  view and  embed a <code>UINavigationcontroller</code> then I created one button in navigation bar.Again i created one <code>UITableviewcontroller</code> also i embed one <code>uinavigationcontroller</code> to it,when i click the button in <code>UICollectionview</code> navigation bar it shows the <code>UITableviewcontroller</code> up to this point is fine,but after this the navigation bar in <code>UITableview</code> controller is not showing at all.please help me</p>
  
  <p><img src="https://i.stack.imgur.com/la7YW.png" alt="uitableviewcontroller image"></p>
  
  <p><img src="https://i.stack.imgur.com/5pspL.png" alt="enter image description here"></p>