Bug when using ARKit with NavigationView

I want to use ARKit with NavigationView.

I couldn't do it.

No error will occur, but the app will stop.

Procedure:

1.Launch app

2.Show AR View

3.Return to the first screen

4.Open AR View again

5.App stops

Please tell me how to fix it or an alternative.

Xcode: 11.2.1 (11B500)

iOS: iPadOS13.3 beta3 (Japanese)

Device: iPad Pro (11-inch, 2018)

I tried two types of code.

(oneView is an AR view)

Code:

import SwiftUI 
import RealityKit 
struct ContentView: View { 
    var body: some View { 
        NavigationView { 
            List { 
            VStack { 
                NavigationLink(destination: oneView()) { 
                    Text("Watch") 
                } 
                }.navigationBarTitle("AR") 
    } 
    }.navigationViewStyle(StackNavigationViewStyle()) 
} 
} 

#if DEBUG 
struct ContentView_Previews : PreviewProvider { 
    static var previews: some View { 
        ContentView() 
    } 
} 
#endif

Code:

import SwiftUI
struct ContentView: View {
    var body: some View {
        NavigationView {
            List {
            NavigationLink(destination: oneView()) {
                Text("Show Next")
            }
            }
        }
    }
}