title: Added UIBarButtonItem is not displayed in the app until touching its hit area
body: <p>Using Xcode 5.1, I have created a View Controller and embedded it via Editor > Embed In > Navigation Controller. I then proceeded to add to its toolbar a UIBarButtonItem by dragging it in Storyboard.</p>
  
  <p>When I run the app, I do not see the button. However, if I click where the button is supposed to be - only then do I see it.</p>
  
  <p>What could cause this odd behavior?</p>