title: UITableView header height will not change in storyboard
body: <p>I have a <code>Storyboard</code> that is using a <code>UITableViewController</code>. I have added a <code>UIView</code> as the <code>UITableView</code> header and set the height to 200. But, for some reason, when I preview it, the header is huge! looks to be about 540 high (header is white):</p>
  
  <p><img src="https://i.stack.imgur.com/uNkxUm.png" alt="enter image description here"></p>
  
  <p>Here are my settings:</p>
  
  <p><img src="https://i.stack.imgur.com/gB1bpm.png" alt="enter image description here"></p>
  
  <p>It looks correct in the storyboard preview. What could be causing it to be so huge and prevent my height setting from working?</p>