title: UIModalTransitionStylePartialCurl not rotating
body: <p>I've got a modal view controller that is being displayed using UIModalPresentationFullScreen with the TransitionStyle set as UIModalTransitionStylePartialCurl.  This works beautifully.  </p>
  
  <p>My problem is that when the device is rotated, my view rotates (as intended), but the "curl" effect does not.  Does anyone know if this is by design, or is there something else that needs to be done?  Thanks.</p>