ios - Simulator vs Physical Device: NavigationLink broken after one use

Question

I'm creating an iOS app with SwiftUI. I'm using:

• Xcode Version 11.3 beta (11C24b)
• iPad Simulator running iOS 13.3
• Physical iPad running also iOS 13.3

However, the app behaves different on the two devices. For example on the physical iPad, NavigationLink can only be used once.

It is my first iOS app. So I'm wondering how these kind of errors can be circumvented or resolved?

import SwiftUI

enum ExerciseType: String, CaseIterable, Codable, Hashable {
    case vowels = "Vowels"
    case special = "Special Characters"
    case small = "Small Characters"
    case long = "Long Vovels"
}

enum LessonType: String, CaseIterable, Codable, Hashable {
    case hiragana = "Introduction to Hiragana"
    case katakana = "Introduction to Katakana"
    case kanji = "Introduction to Kanji"
}

struct ContentView: View {
    var body: some View {
        NavigationView{
            Form{
                Section(header: Text("Default Lesson")){
                    List{
                        ForEach(LessonType.allCases, id:.self){ lesson in
                            NavigationLink(destination: LessonView(), label: {Text(lesson.rawValue)})
                        }
                    }
                }
            }
        .navigationBarTitle("iPad NavigationLink")
        }.navigationViewStyle(StackNavigationViewStyle())
    }
}

struct LessonView: View {
    var body: some View{
        Form{
            List{
                ForEach(ExerciseType.allCases, id:.self){ exercise in
                    NavigationLink(destination: Text(exercise.rawValue), label: {Text(exercise.rawValue)})
                }
            }
        }
    }
}

Answer 1

The bug is fixed by Apple in iOS 13.3 beta 4. Keep in mind that iOS 13.3 was in beta at the time you tested it. It was not a bug in iOS 13.2, so this is nothing to worry about anymore.