title: Dragged Annotation views do not move with maps
body: <p>I have a problem with my map after an annotation view is dragged:
  when I change  the region panning the map, the dragged annotation remains fixed in the screen ( other annotation that have not been dragged are displayed correctly, the problem is on every annotation view that is dragged ; note that the annotation view continues to bel selectable for callout and dragging, the only problem that i can see is that it does not move when I pan Map )</p>
  
  <p>I there any solution ? is this a known bug with ios 7.1 ? Or am i missing something in my code ?</p>