(MKMapItem iOS10) marker disappear on map when add "name"

Question

this code

        let latitude:CLLocationDegrees =  location.coordinate.latitude
        let longitude:CLLocationDegrees =  location.coordinate.longitude
        let coordinates = CLLocationCoordinate2DMake(latitude, longitude)
        let placemark = MKPlacemark(coordinate: coordinates, addressDictionary: nil)
        let mapItem = MKMapItem(placemark: placemark)
        mapItem.name = location.address
        mapItem.openInMaps(launchOptions: nil)

on iOS10 when add mapItem.name = location.address Marker will disappear on map when the map already has same marker. but this problem not show on iOS9.