SwiftUI Crash

crash.swift

// To reproduce crash:
// 1. Navigate to second tab
// 2. Toggle the switch
// 3. Navigate to first tab
// Note: removing the NavigationView in the second tab avoids the crash

final class ViewModel: BindableObject {
    var tab: Int = 0 { willSet { willChange.send(()) } }
    var isOn: Bool = false { willSet { willChange.send(()) } }
    let willChange = PassthroughSubject<Void, Never>()
}

struct RootView: View {
    @EnvironmentObject var viewModel: ViewModel

    var body: some View {
        TabbedView(selection: $viewModel.tab) {
            Text("One").tabItem { Text("One") }.tag(0)
            LeafView().tabItem { Text("Two") }.tag(1)
        }
    }
}

struct LeafView: View {
    @EnvironmentObject var viewModel: ViewModel

    var body: some View {
        // Comment NavigationView to resolve crash
        NavigationView {
            Toggle(isOn: $viewModel.isOn) {
                Text("Toggle")
            }
        }
    }
}

#if DEBUG
struct RootView_Previews: PreviewProvider {
    static var previews: some View {
        RootView().environmentObject(ViewModel())
    }
}
#endif