title: Storyboard does not render controls
body: <p>I dragged some controls onto <code>UIViewController</code> and <code>UITableViewController</code> and they do not render. Whenever I run pod update this happens. The behavior is not constant. Sometimes when I quit Xcode and open it again, sometimes the controls appear. Since some days the behavior has been very bad, for some scenes, Xcode does not render controls.
  <a href="https://i.stack.imgur.com/6zBeI.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6zBeI.png" alt="enter image description here"></a></p>