Popover dismiss issue

popover.swift

import SwiftUI

struct Item: Identifiable {
    let id: String
}

struct ContentView : View {
    @State var item: Item? = nil
    
    var body: some View {
        Button(action: {
            self.item = .init(id: "a")
        }) {
            Text("Show new view")
        }.popover(item: $item, attachmentAnchor: .point(UnitPoint.center), arrowEdge: .bottom) { _ in
            HStack {
                Button(action: {
                    self.item = nil
                }) {
                    Text("New Popover")
                }
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}