swift - SwiftUI - Navigation bar button not clickable after sheet has been presented

Question

I have just started using SwiftUI a couple of weeks ago and i'm learning. Today I ran into a into an issue.

When I present a sheet with a navigationBarItems-button and then dismiss the ModalView and return to the ContentView I find myself unable to click on the navigationBarItems-button again.

My code is as follows:

struct ContentView: View {

    @State var showSheet = false

    var body: some View {
        NavigationView {
            VStack {
                Text("Test")
            }.sheet(isPresented: self.$showSheet) {
                ModalView()
            }.navigationBarItems(trailing:
                Button(action: {
                    self.showSheet = true
                }) {
                    Text("SecondView")
                }
            )
        }
    }
}

struct ModalView: View {

    @Environment(.presentationMode) var presentation

    var body: some View {
        VStack {
            Button(action: {
                self.presentation.wrappedValue.dismiss()
            }) {
                Text("Dismiss")
            }
        }
    }
}

Answer 1

I think this happens because the presentationMode is not inherited from the presenter view, so the presenter didn't know that the modal is already closed. You can fix this by adding presentationMode to presenter, in this case to ContentView.

struct ContentView: View {

    @Environment(.presentationMode) var presentation
    @State var showSheet = false

    var body: some View {
        NavigationView {
            VStack {
                Text("Test")
            }.sheet(isPresented: self.$showSheet) {
                ModalView()
            }.navigationBarItems(trailing:
                Button(action: {
                    self.showSheet = true
                }) {
                    Text("SecondView")
                }
            )
        }
    }
}

Tested on Xcode 12.5.

Here is the full working example.