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swift - MapView not working when its embed in Navigation View

Location permission Request is not showing nor user location on map when i use navigation view and navigation Link to go to the map view Ive tried oppening this view without navigation view and navigation link and it works just fine but when its embed in navigation link and navigation view its showing just the map
here is my code

import MapKit
import SwiftUI

struct Maps: View {
    @State private var region = MKCoordinateRegion(center: CLLocationCoordinate2D(latitude: 37.785834, longitude: -122.406417),latitudinalMeters: 10000, longitudinalMeters: 10000)
    
    @State var tracking : MapUserTrackingMode = .follow
    @State var manager = CLLocationManager()
    @StateObject var managerDelegate = locationDelegate()
    
    var body: some View {
        ZStack{
            VStack{
            Map(coordinateRegion: $region, interactionModes: .all, showsUserLocation: true, userTrackingMode: $tracking)
            }.onAppear{
                manager.delegate = managerDelegate
            }
                
 
        }.navigationBarTitleDisplayMode(.inline)
    }
}

struct Maps_Previews: PreviewProvider {
    static var previews: some View {
        Maps()
    }
}


class locationDelegate: NSObject, ObservableObject, CLLocationManagerDelegate {
    func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
        if manager.authorizationStatus == .authorizedWhenInUse {
            manager.startUpdatingLocation()
            
        } else {
            manager.requestWhenInUseAuthorization()
        }
    }
    
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
       print("Location")
    }
}

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