[iOS 16] App freeze when hitting back on navigation bar, using a WrappingHastack in a view as a NavigationLink

[sadaf-behbahani]

Describe the bug
On iOS 16, app meets a severe hang when using a wrappingHastack inside of a navigation link if you hit back button on the navigation bar.

To Reproduce
Steps to reproduce the behavior:

struct ContentView: View {
    var body: some View {
        NavigationView {
            VStack {
                NavigationLink("Hit me ") {
                    WrappingView()
                }
            }
        }
    }
}


import WrappingHStack

struct WrappingView: View {
    @State private var array: [String] = []
    var body: some View {
        VStack {
            WrappingHStack(array,
                           id: \.self,
                           alignment: .center,
                           spacing: .constant(10)) { topic in
                Text(topic)
            }
        }
        .onAppear {
            array = ["test",
                     "test3",
                     "test4",
                     "test5",
                     "test6",
                     "test7"]
        }
    }
}

• run the app with code above,
• hit the navigation link
• hit back button on the navigation bar

Expected behavior
Go back the previous screen and not freeze the app

Screenshots
If applicable, add screenshots to help explain your problem.

Context:

• WrappingHStack version: [e.g. 2.2.1]
• Model: iPhone 13 pro, simulator , iPhone 11
• OS: iOS 16

Additional context
Freeze happens only if you use this lib inside of a Navigation link

[Daniel Klöck]

It seems to be related to an issue when using NavigationLink with contained GeometryReaders that are not inside a NavigationView. The workaround is to set a NavigationView around the WrappingHStack.

In your example, you could use:

struct ContentView: View {
    var body: some View {
        NavigationView {
            VStack {
                NavigationLink("Hit me ") {
                    WrappingView()
                }
            }
        }
    }
}


import WrappingHStack

struct WrappingView: View {
    @State private var array: [String] = []
    var body: some View {
       NavigationView { // <<<< HERE
            VStack {
                WrappingHStack(array,
                               id: \.self,
                               alignment: .center,
                               spacing: .constant(10)) { topic in
                    Text(topic)
                }
            }
            .onAppear {
                array = ["test",
                     "test3",
                     "test4",
                     "test5",
                     "test6",
                     "test7"]
            }
        }
    }
}

For more information see this link

[Daniel Klöck]

I have added this use case to the example app

[sadaf-behbahani]

Thank you 🙏

[Andrew]

@dkk I have a similar problem in two cases but a more complicated structure. The workaround doesn't help.

Case 1

TabView {
    NavigationView {
        ScrollView {
            WrappingHStack {

Case 2

TabView {
    NavigationView {
        ScrollView {
            NavigationLink {
                ScrollView {
                    WrappingHStack {

There are also intermediate views and ZStacks and VStacks that I didn't mention.