title: In SwiftUI, iOS15, 2nd level NavigationLink, isActive is not working
body: <p>in iOS15, it is not working:</p>
  <pre><code>import SwiftUI
  struct ContentView: View {
      var body: some View {
          NavigationView {
              NavigationLink {
                  Dest1().navigationTitle(&quot;Dest1&quot;)
              } label: {
                  Text(&quot;to Destination 1&quot;)
              }
          }
      }
  }
  
  struct Dest1: View {
      @State var dest2Active: Bool = false
      var body: some View {
          NavigationLink(
              destination: Button {
                  dest2Active = false // not working!!
              } label: {Text(&quot;dismiss&quot;)} .navigationTitle(&quot;Dest2&quot;),
              isActive: $dest2Active
          ) {Text(&quot;to Destination 2&quot;)}
      }
  }
  </code></pre>
  <p>The <code>dismiss</code> button in <code>Dest2</code> is not working!
  I remember that in iOS14, this code works well.
  How to resolve this?</p>