title: Swift UIScrollView not scrolling but responding to setContentOffset and Delegate responds
body: <p>Getting a really bizarre incident with a <code>UIScrollView</code> here which just refuses to scroll. I set it up in my StoryBoard and set the <code>contentSize</code> correctly in my <code>ViewDidLoad</code>. I double checked to ensure that it was <code>Scrollable</code> etc, yet it's just not working. I set <code>scrollView.setContentOffset()</code> and it scrolls fine with a lovely animation and the <code>ScrollViewDidScroll</code> delegate get's called. So, with that said any reason why it may not be scrolling with drag gestures?</p>
  
  <p>Things I've checked:<br>
  - <code>UserInteraction</code> Enabled on itself, all <code>sub/superviews</code>.<br>
  - <code>Scrollable</code>.<br>
  - Toggled: <code>DelaysContentTouches</code> and <code>CancellableContentTouches</code>.<br></p>
  
  <p>I'm out of ideas. Currently using <code>Xcode 6 Beta 1</code>. Any help would be appreciated.<br></p>
  
  <p>Regards,<br>
  Mike</p>