Add a button to keyboard in a sheet view in Xcode 15 beta 3

Hello,

I am trying to create a simple effect in a sheet view where when a user tap the 'Done' button on keyboard, the 'TextField' should be unfocused and the keyboard should disappear. With almost the same code, the 'Done' button doesn't work as expected in 'SheetView' as it does in 'MainView'. Any suggestions are appreciated.

struct MainView: View {
    @State private var text = ""
    @FocusState private var isFocused: Bool
    @State private var showSheet = false
    
    var body: some View {
        VStack {
            TextField("text", text: $text)
                .focused($isFocused)
                .textFieldStyle(.roundedBorder)
            Button("showSheetView") {
                isFocused = false
                showSheet.toggle()
            }
        }
        .padding()
        .toolbar {
            ToolbarItemGroup(placement: .keyboard) {
                Spacer()
                Button("Done") {
                    isFocused = false
                }
            }
        }
        .sheet(isPresented: $showSheet) {
            NavigationStack {
                SheetView()
            }
        }
    }
}

struct SheetView: View {
    @Environment(\.dismiss) var dismiss
    @State private var text = ""
    @FocusState private var isFocused: Bool
    
    var body: some View {
        TextField("text", text: $text)
            .focused($isFocused)
            .textFieldStyle(.roundedBorder)
            .padding()
            .toolbar {
                ToolbarItem(placement: .topBarTrailing) {
                    Button("Cancel") {
                        isFocused = false
                        dismiss()
                    }
                }
                // The following tool bar button does not work. It seems tappable, but not functioning.
                ToolbarItemGroup(placement: .keyboard) {
                    Spacer()
                    Button("Done") {
                        isFocused = false
                    }
                }
            }
    }
}