How do I add Animations to Transitons between custom NavigationItems made from AnyView?

Here is updated entities from that article to adopt simple animated transitions between screens. All that is scratchy and only for demo, but hope it could be helpful somehow.

Note: transitions do not work in Preview (at least at my Xcode 11.2/iOS 13.2), so tested in Simulator or real device.

Here is how it looks:

Here is code:

final class NavigationStack: ObservableObject {
    enum Direction {
        case root
        case forward
        case backward
    }

    @Published var viewStack: [NavigationItem] = []
    @Published var currentView: NavigationItem
    @Published var navigate: Direction = .root

    init(_ currentView: NavigationItem ){
        self.currentView = currentView
    }
    func unwind(){
        if viewStack.count == 0{
            return
        }
        let last = viewStack.count - 1
        currentView = viewStack[last]
        withAnimation {
            self.navigate = .backward
        }
        viewStack.remove(at: last)
    }
    func advance(_ view:NavigationItem){
        viewStack.append( currentView)
        currentView = view
        withAnimation {
            self.navigate = .forward
        }
    }
    func home( ){
        currentView = NavigationItem(view: AnyView(HomeView()))
        viewStack.removeAll()
        withAnimation {
            self.navigate = .root
        }
    }
}

struct NavigationHost: View{
    @EnvironmentObject var navigation: NavigationStack

    var body: some View {
        ZStack(alignment: .topLeading) {
            if navigation.navigate == .root {
                self.navigation.currentView.view
            }
            else if navigation.navigate == .backward {
                self.navigation.currentView.view
                    .transition(.move(edge: .leading))
            }
            if navigation.navigate == .forward {
                self.navigation.currentView.view
                    .transition(.move(edge: .trailing))
            }
        }

    }
}