title: Why does a custom UIButton image does not resize in Interface Builder?
body: <p>Why does a custom UIButton image not resize with the button?</p>
  
  <p>I set its view mode to <em>Scale to Fill</em> in Interface Builder, but unlike a UIImageView image, it doesn't respect that setting.</p>
  
  <p>Am I looking in the wrong place or is it not possible?</p>