title: iPad modal controller is dismissed after rotation
body: <p>I am presenting a modal view using a storyboard segue set as <code>Form Sheet</code>.
  The problem is, when I rotate the iPad after this view is displayed, the view is removed from the view/dismissed.</p>
  
  <p>I have no idea why. It only seems to occur when starting in Portrait then rotating to Landscape.</p>
  
  <p>If I start in Landscape then show the view then rotate it stays on the screen fine.</p>
  
  <p>Any ideas?</p>
  
  <p>EDIT ----</p>
  
  <p>It also seems that full screen modal views are also dismissed after rotation!</p>
  
  <p>There's nothing special going on in the presentation code, this is a full screen modal:</p>
  
  <pre><code>EditViewController *editView = [self.navigationController.storyboard instantiateViewControllerWithIdentifier:@"editViewController"];
  editView.delegate = self;
  editView.image = image;
  editView.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
  
  [self presentViewController:editView animated:YES completion:nil];
  </code></pre>
  
  <p>This happens on both iOS 6 and iOS 7</p>
  
  <p>EDIT 2 ----
  Forgot to mention, i'm presenting the modal from the left/master view controller of a <code>UISplitViewController</code></p>