Programmatic push with NavigationLink via isActive during onAppear is automatically dismissed

I want to init a navigation stack in SwiftUI. Thus I want to push a second view immediately after a first view appears. Approach: Using a @State var, which is set to true in onAppear, and thus activates a NavigationLink in first view.

However, the approach is not working. The push is done and then the second view is immediately dismissed. The expected behaviour is that the second screen stays on screen.

This is a simplified demo:

Code Block 
struct SecondView: View {
  var body: some View {
    Text("Second")
      .navigationTitle("Second")
      .onAppear(perform: {
        print("Second: onAppear")
      })
  }
}
struct FirstView: View {
   @State var linkActive = false
   var body: some View {
     NavigationLink(destination: SecondView(), isActive: $linkActive) {
       Text("Goto second")
     }
     .navigationTitle("First")
     .onAppear(perform: {
       print("First: onAppear")
       linkActive = true
     })
     .onChange(of: linkActive) { value in
       print("First: linkActive changed to: \(linkActive)")
     }
   }
 }
 struct SwiftUIView: View {
   var body: some View {
     NavigationView {
       NavigationLink(destination: FirstView()) {
         Text("Goto first")
       }
     }
     .navigationViewStyle(StackNavigationViewStyle())
   }
}

Log output:

Code Block 
First: onAppear
First: linkActive changed to: true
Second: onAppear
First: linkActive changed to: false

Trying to figure out if this is a SwiftUI bug, or something I’m doing wrong. May someone help?