title: Xcode 8: Storyboard UILabel attributed line spacing is NOT honored
body: <p>I'm setting the a UILabel's attributed line spacing in the storyboard as such:</p>
  
  <p><a href="https://i.stack.imgur.com/j3kyE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/j3kyE.png" alt="enter image description here"></a></p>
  
  <p>But in the simulator it's not working at all:</p>
  
  <p><a href="https://i.stack.imgur.com/TOpDu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TOpDu.png" alt="enter image description here"></a></p>
  
  <p>What am I doing wrong with this?</p>