title: UIScrollView UIPangestureRecognizer dead zone on top edge of screen
body: <p>as shown in the picture below the UIPanGestureRecognizer will not pan when the drag started inside the "dead zone" on the top of the screen. This is most likely caused by the notification center. </p>
  
  <p><img src="https://i.stack.imgur.com/iv1tO.jpg" alt="enter image description here"></p>
  
  <p>The touchesMoved:withEvent: method however does get called, so there should be a way to get pan gestures recognized in this area.</p>
  
  <p>Has anyone else came across this issue, are there any workarounds out there yet? Thanks for any help!  </p>