SwiftUI .toolbar disappears after following NavigationLink and coming back

Question

I've added a .toolbar to the top level of a NavigationView that will eventually be used to select items in a list without using swipe gestures (up button, down button, etc.). I also have a .navigationBar going on, to access other views for Account and Settings.

For the most part it's looking really good, but when I follow a NavigationLink (in .navigationBarItems) within NavigationView, and then use the built-in back navigation, my .toolbar disappears from the top level.

Am I putting the .toolbar in the wrong place? It feels like a problem with .navigationViewStyle(StackNavigationViewStyle()) because when I comment that out, the toolbar will not disappear upon navigation... but I don't like how the default behavior works in landscape so I'm relying on it.

---

import SwiftUI

struct ContentView: View {

    var body: some View {

                NavigationView {

                    List {
                        Group {
                            Section(header: Text("List Items").foregroundColor(.gray).font(.footnote)) {
                                Text("List Item One")
                                Text("List Item Two")
                                Text("List Item Three")
                            }
                        }
                   }.navigationTitle("Top Level List").navigationBarTitleDisplayMode(.inline)
                       .ignoresSafeArea(.all)

    // MARK: NAVBAR

                        .navigationBarItems(
                            leading:
                            NavigationLink(destination: UserView()) {
                                Image(systemName: "person.crop.circle").font(.title2)
                            },
                            trailing:
                                NavigationLink(destination: SettingsView()) {
                                    Image(systemName: "gear").font(.title2)
                                })

     //MARK: - CONTENT NAV

                        .toolbar {

                            ToolbarItemGroup(placement: .bottomBar) {

                                Button(action: {}, label: {Label("Mute", systemImage: "speaker.slash.fill")})
                                Spacer()
                                Button(action: {}, label: {Label("Repeat", systemImage: "arrow.clockwise")})
                                Spacer()
                                Button(action: {}, label: {Label("Previous", systemImage: "arrow.up")})
                                Spacer()
                                Button(action: {}, label: {Label("Next", systemImage: "arrow.down")})
                                Spacer()
                                Button(action: {}, label: {Label("Select", systemImage: "arrow.right")})

                            }
                        }
                }.navigationViewStyle(StackNavigationViewStyle())
        }
}

struct UserView: View {

    @State private var username: String = ""
    @State private var password: String = ""

    var body: some View {

                    Form {
                        TextField("Username", text: $username)
                        SecureField("Password", text: $password)
                    }
                    .navigationBarTitle("Account").font(.subheadline)

    }
}

struct SettingsView: View {
    
    @State private var setting1: String = ""
    @State private var setting2: String = ""

    var body: some View {

        Form {
            TextField("Setting One", text: $setting1)
            SecureField("Setting Two", text: $setting2)
        }
        .navigationBarTitle("Settings").font(.subheadline)

    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

Answer 1

You right, it's in a wrong place. Here is how it should be if you need a toolbar always shown:

struct ContentView: View {
    
    var body: some View {
        
        NavigationView {
            
            List {
                Group {
                    Section(header: Text("List Items").foregroundColor(.gray).font(.footnote)) {
                        Text("List Item One")
                        Text("List Item Two")
                        Text("List Item Three")
                    }
                }
            }.navigationTitle("Top Level List").navigationBarTitleDisplayMode(.inline)
                .ignoresSafeArea(.all)
            
            // MARK: NAVBAR
            
                .navigationBarItems(
                    leading:
                        NavigationLink(destination: UserView()) {
                            Image(systemName: "person.crop.circle").font(.title2)
                        },
                    trailing:
                        NavigationLink(destination: SettingsView()) {
                            Image(systemName: "gear").font(.title2)
                        })
            
            //MARK: - CONTENT NAV
            
        }.navigationViewStyle(StackNavigationViewStyle())
            .toolbar {
                
                ToolbarItemGroup(placement: .bottomBar) {
                    
                    Button(action: {}, label: {Label("Mute", systemImage: "speaker.slash.fill")})
                    Spacer()
                    Button(action: {}, label: {Label("Repeat", systemImage: "arrow.clockwise")})
                    Spacer()
                    Button(action: {}, label: {Label("Previous", systemImage: "arrow.up")})
                    Spacer()
                    Button(action: {}, label: {Label("Next", systemImage: "arrow.down")})
                    Spacer()
                    Button(action: {}, label: {Label("Select", systemImage: "arrow.right")})
                    
                }
            }
    }
}