gistfile1.txt

//
//  ContentView.swift
//  constraint test
//
//  Created by Jordi Bruin on 01/04/2021.
//

import SwiftUI

// 1. Click the "Open Detail View" button
// 2. Go back
// 3. Click the "Open Detail View" button again
// 4. Click the "Present Modal"
// 5. It will crash

struct ContentView: View {
	var body: some View {
		NavigationView {
			NavigationLink(
				destination: DetailView(),
				label: {
					Text("Open Detail View")
				})
				
				// If you comment this out, it does not crash
				.toolbar {
					ToolbarItem(placement: .navigationBarTrailing) {
						Menu {
							ForEach(1...5, id: \.self) { index in
								Button {
									print("tap menu item")
								} label: {
									HStack {
										Text("Menu Item \(index)")
									}
								}
							}
						} label: {
							Text("Filter")
						}
					}
				}
		}
	}
}

struct DetailView: View {
	@State var modalType: ModalType?
	var body: some View {
		Button(action: {
			modalType = .modalWithTabView
		}, label: {
			Text("Present Modal")
		})
		.sheet(item: $modalType, content: { $0 })
	}
}

enum ModalType: Identifiable, View {
	case modalWithTabView

	var id: String {
		return "modalWithTabView"
	}

	var body: some View {
		switch self {

			case .modalWithTabView:
				ModalWithTabView()
		}
	}
}

struct ModalWithTabView: View {
	@State var currentStep = 0
	var body: some View {
		TabView(selection: $currentStep) {
			ForEach (0 ..< 10) { index in
				Text("Page \(index)")
					.tag(index)
			}
		}
		// If you comment this out, it does not crash
		.tabViewStyle(PageTabViewStyle())
	}
}