title: UIButtons don't align correctly upon first load of View Controller
body: <p>I have a ViewController/View in a TabBar Controller that has 8 UIButtons in a 2x4 grid, sized 75x75, each with a 75x75 background image set on them. Currently, I've hard coded the XY positions in the Size Inspector in Interface Builder.</p>
  
  <p>When I first load the View, by clicking on the tab bar icon, the bottom two buttons get squished against the row above them - as per this picture: </p>
  
  <p><img src="https://i.stack.imgur.com/yeKuj.png" alt="enter image description here"></p>
  
  <p>Each button triggers a segue that launches another ViewController with a WebView in it :</p>
  
  <pre><code>[self performSegueWithIdentifier:@"playVimeo" sender:sender];
  </code></pre>
  
  <p>In that WebView, there is a back button that triggers another segue to return to the thumbnails page : </p>
  
  <pre><code>[self performSegueWithIdentifier:@"returnToThumbnails" sender:sender];
  </code></pre>
  
  <p>When I press the back button and return to the thumbnail view for a second time, the buttons snap to the right place, unlike when they first load, as per this picture: </p>
  
  <p><img src="https://i.stack.imgur.com/czq9q.png" alt="enter image description here"></p>
  
  <p>Here is a screenshot of my Storyboard: </p>
  
  <p><img src="https://i.stack.imgur.com/RsL4D.png" alt="enter image description here"></p>
  
  <p>Does anyone have an idea what is going on here ? I am lost... </p>
  
  <p>Thanks in advance!</p>
  
  <p>Jesse</p>