Wrong _metersPerPixel value in -[RMMapView setCenterProjectedPoint:animated:]

[vzqwer]

Steps to reproduce.

1. Center mapView at some coordinate using - [RMMapView setZoom:atCoordinate:animated:]
2. ZoomOut, for example, using two finger tap.
3. Show modal viewController.
4. From modal ViewController call - [RMMapView setZoom:atCoordinate:animated:] with another coordinates for mapView of presentingViewController and close modal viewController.
5. mapView is centered at wrong coordinate.

As I investigated problem comes from -[RMMapView setCenterProjectedPoint:animated:] The value of _metersPerPixel is wrong because -[RMMapView observeValueForKeyPath:ofObject:change:context:] triggers after -[RMMapView setCenterProjectedPoint:animated:]

This error appears on iPhone5s. On iPhone4s and iPhone5 everything works well.

Fast solution is to replace

[_mapScrollView setContentOffset:CGPointMake(normalizedProjectedPoint.x / _metersPerPixel - _mapScrollView.bounds.size.width/2.0,
                                                _mapScrollView.contentSize.height - ((normalizedProjectedPoint.y / _metersPerPixel) + _mapScrollView.bounds.size.height/2.0))
                           animated:animated];

with

double currentMetersPerPixel = planetBounds.size.width / _mapScrollView.contentSize.width;
[_mapScrollView setContentOffset:CGPointMake(normalizedProjectedPoint.x / currentMetersPerPixel - _mapScrollView.bounds.size.width/2.0,
                                                _mapScrollView.contentSize.height - ((normalizedProjectedPoint.y / currentMetersPerPixel) + _mapScrollView.bounds.size.height/2.0))
                           animated:animated];