DuplicateInit.swift

import SwiftUI

class Object: ObservableObject {
    @Published var flag = false
    init() {
        print("object init")
    }
}

struct DetailView: View {
    @StateObject var object = Object()
    
    var body: some View {
        Text("\(object.flag)")
    }
}

struct ContentView: View {
    @State var showingFirst = false
    @State var showingSecond = false
    
    var body: some View {
        NavigationStack {
            ZStack {
                Button("First") {
                    showingFirst = true
                }
                .sheet(isPresented: $showingFirst) {
                    NavigationStack {
                        // replace this ZStack with Form, List, issue exists.
                        // remove this ZStack, issue gone.
                        ZStack {
                            Button("Second") {
                                showingSecond = true
                            }
                            .sheet(isPresented: $showingSecond) {
                                DetailView()
                            }
                        }
                    } // 2nd NavigationStack
                } // 1st sheet
            } // ZStack
        } // 1st NavigationStack
    } // body
} // ContentView

#Preview {
    ContentView()
}

Screen.Recording.2024-07-12.at.12.07.34.mp4