从其子视图返回视图后，无法单击NavigationLink

我的应用程序具有AView-> BView-> CView-> DView的多层布局。

我改变

window.rootViewController

到BView以便“弹出” 2个顶视图，但是由于某些原因，当我回到BView时，无法单击NavigationLink。

有想法该怎么解决这个吗？好像BView不知道它变得可见。

AView.swift：

import SwiftUI

struct AView: View {
    
    init() {
        print("AView init")
    }
    

    var body: some View {
        
        NavigationView {
            VStack {
                NavigationLink(destination: BView()) {
                    Text("This is View A, now go to View B.")
                }
            }
        }
    }
}

struct BView: View {
    init() {
        print("BView init")
    }
    

    var body: some View {
        NavigationLink(destination: CView()) {
                Text("This is View B, now go to View C.")
        }
    }
}

struct CView: View {
    
    init() {
        print("CView init")
    }
    
    var body: some View {
        NavigationLink(destination: DView()) {
                Text("This is View C, now go to View D.")
        }
    }
}

struct DView: View {
    init() {
        print("DView init")
    }
    
    var body: some View {

        Button(action: {
            print("button pressed")
            (UIApplication.shared.connectedScenes.first?.delegate as? SceneDelegate)?.toBView()

        },
               label: {
            Text("Back!")
        })

    }
}

SceneDelegate.swift：

import UIKit
import SwiftUI

class SceneDelegate: UIResponder, UIWindowSceneDelegate {

    var window: UIWindow?

    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        // Create the SwiftUI view that provides the window contents.
        let aView =     AView()
        
        // Use a UIHostingController as window root view controller.
        if let windowScene = scene as? UIWindowScene {
            let window = UIWindow(windowScene: windowScene)
            window.rootViewController = UIHostingController(rootView: aView)
            self.window = window
            window.makeKeyAndVisible()
        }
    }
    
    func toBView() {
        let bView = BView()
        window?.rootViewController = UIHostingController(rootView: bView)
    }

}