title: UIModalPresentationCurrentContext with Transition?
body: <p>I am trying to modal present a view controller like below:</p>
  
  <pre><code>UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
  UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"addPopover"];
  vc.view.backgroundColor = [UIColor clearColor];
  self.modalPresentationStyle = UIModalPresentationCurrentContext;
  [self presentModalViewController:vc animated:YES];
  </code></pre>
  
  <p>Now using <code>UIModalPresentationCurrentContext</code> means I can present this view with a transparent background and see my other view behind the new one. However, it stops me from being able to present it with a transition.</p>
  
  <p>Any ideas why? Or how I can get around this? Thanks.</p>