title: App crashes when pressing link on UITextView
body: <p>I'm facing a weird bug in my iOS app, and it only happens in device. In my app I've a home page, from there if user presses a button I'll show a FormSheet (About Us page).</p>
  
  <pre><code>let storyBoard = UIStoryboard(name: "Utility", bundle: nil);
  let aboutUsVC  = storyBoard.instantiateViewControllerWithIdentifier("AboutUs") as! AboutUsViewController;
  aboutUsVC.modalPresentationStyle = .FormSheet;
  aboutUsVC.preferredContentSize   = CGSize(width: 500,height: 400);
  self.presentViewController(aboutUsVC, animated: true, completion: nil);
  </code></pre>
  
  <p>I've placed a UITextView inside that about us page and added a link as it's content:
  <a href="https://i.stack.imgur.com/7q5V6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/7q5V6.png" alt="Link in Text View"></a></p>
  
  <h3>Issue 1</h3>
  
  <p>When I long press on that link I'm getting a warning message on my console:</p>
  
  <blockquote>
    <p>&lt;_UIRotatingAlertController: 0x13e107200>  on  which is already presenting
    </p>
  </blockquote>
  
  <h3>Issue 2</h3>
  
  <p>After the long press if I click on the link again, the app crashes with following message:</p>
  
  <blockquote>
    <p>2016-03-16 18:11:37.022 MyApp[938:400786] *** Assertion failure in
    -[UITextView startInteractionWithLinkAtPoint:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit/UIKit-3512.29.5/UITextView_LinkInteraction.m:377</p>
    
    <p>2016-03-16 18:11:37.023 MyApp[938:400786] *** Terminating app due
    to uncaught exception 'NSInternalInconsistencyException', reason: ''
    *** First throw call stack: (0x184220f48 0x198e47f80 0x184220e18 0x185114a1c 0x18a12de50 0x189d38be4 0x189d2f330 0x189958b5c
    0x1897e685c 0x189d3070c 0x1897a58b8 0x1897a263c 0x1841d7bd0
    0x1841d5974 0x1841d5da4 0x184104ca0 0x18f184088 0x18981cffc
    0x100188368 0x19968a8b8) libc++abi.dylib: terminating with uncaught
    exception of type NSException</p>
  </blockquote>
  
  <p>I think the UIKit is causing that crash. How can I fix this crash ?</p>
  
  <h3>More Info:</h3>
  
  <ol>
  <li>Base SDK : 9.2</li>
  <li>Deployment Target : 8.1</li>
  <li>Xcode Version : 7.2.1</li>
  <li>iOS Device OS Version : 9.1</li>
  </ol>