title: iOS MkMapView blank after moving to Xcode 6
body: <p>I have apps created in Xcode 5 with mkMapView working well. Recently created a new app in Xcode 6.1 and dragged old storyboard scenes and view controllers to the new app. The map view now shows a blank screen and no annotations on IOS 7 but worked on IOS 8. I added a button and now the map view is blank on IOS 8 as well. I deleted and recreated the view in storyboard with a map view inside a view inside a view controller by dragging from object templates. The map was still blank. After debugging I see that regionWillChangeAnimated and regionDidChangeAnimated show repeated setRegion events that set the region to 0.0 coordinates (before and after I set the correct region).</p>
  
  <p>Finally removed the mkMapView from the storyboard view and created it using code. </p>
  
  <pre><code>//Create the map view
  _mkMapView = [[MKMapView alloc] initWithFrame:self.view.frame];
  _mkMapView.mapType = MKMapTypeSatellite;
  _mkMapView.delegate = self;
  [self.view addSubview:_mkMapView];
  [self.view  setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight];
  self.view.alpha = 1.0;
  _mkMapView.mapType = MKMapTypeStandard;
  _mkMapView.pitchEnabled = NO;
  //Set me as map delegate
  _mkMapView.delegate = self;
  </code></pre>
  
  <p>The zero setRegion events now do not appear &amp; map works OK. Is there something in the storyboard I should be setting? Why would a storyboard created view be causing repeated setRegion events with zero coordinates?</p>