通过编程推送2个视图后，最后一个视图立即弹出

Question

我试图在SwiftUI中以编程方式推送视图，但是当我使用NavigationLink的isActive属性推送两个视图时，最后一个视图被推送并立即弹出。 我不确定我是在做错什么还是SwuiftUI的错误。

这是我尝试推送两个视图时的外观：

如果我按一个视图，然后再按另一个视图，则它会起作用：

这是我的代码。我将appState作为EnvironmentObject传递

class AppState: ObservableObject {
    @Published var showView1 = false
    @Published var showView2 = false
}

struct ContentView: View {
    @EnvironmentObject var appState: AppState
    var body: some View {
        NavigationView {
            VStack {
                Button(action: {
                    appState.showView2 = false
                    appState.showView1 = true
                }) {
                    Text("Show view 1")
                }
                Button(action: {
                    appState.showView2 = true
                    appState.showView1 = true
                }) {
                    Text("Show view 2")
                }
                NavigationLink( destination: View1(), isActive: $appState.showView1, label: { EmptyView() })
            }
        }
    }
}

struct View1: View {
    @EnvironmentObject var appState: AppState

    var body: some View {
        VStack {
            Text("This is view1")
            Button(action: {
                appState.showView2 = true
            }) {
                Text("Show view2")
            }
            NavigationLink( destination: View2(), isActive: $appState.showView2, label: { EmptyView() })
        }
    }
}

struct View2: View {
    @EnvironmentObject var appState: AppState
    var body: some View {
        VStack {
            Text("This is view2")
            Button(action: {
                appState.showView1 = false
                appState.showView2 = false
            }) {
                Text("Back to root")
            }
        }
    }
}

这可能与https://stackoverflow.com/a/57274613/2584078

中描述的错误有关

但是在这种情况下是相反的。弹出视图时插入了

我正在使用Xcode 12.0 beta 2（12A6163b）