SwiftUI warning: `Attempting -[UIContextMenuInteraction dismissMenu], when not in an active state`

Using Xcode 12 beta (12A6159) on macOS Catalina 10.15.5 (19F101) when I press "Back" button in NavigationView, navigating back from a pushed View, I see this warning in the console.

[UIContextMenuInteraction] Attempting -[UIContextMenuInteraction dismissMenu], when not in an active state. This is a client error most often caused by calling dismiss more than once during a given lifecycle. (<_UIVariableGestureContextMenuInteraction: 0x6000037689a0>)

I did not get this warning on Xcode 11.5.

The code is dead simple:

var body: some View {
    NavigationView {
        NavigationLink(destination: gameScreen) {
            Text("Start game")
        }
    }
}

After having navigated to gameScreen and then pressing the "Back" button in the NavigationBar I see the logged warning in the console.

I have not upgraded to any of the new SwiftUI stuff like App or SceneBuilder etc...