SwiftUI.View.popover(isPresented: Binding<Bool>) doesn't crashed, but SwiftUI.View.popover(item: Binding<Identifiable?>) crashes on dismiss Popover.

CrashSwiftUIPopover.swift

import SwiftUI

/*
  This works fine.
*/
struct NonCrashView: View {
    @State private var isPopup: Bool = false

    var body: some View {
        Button("Foo") {
            self.isPopup.toggle()
        }
        .popover(isPresented: $isPopup) {
            Button("Dismiss") {
                self.isPopup = false
            }
        }
    }
}

/*
  This crashes on dismiss Popover.
  *** Terminating app due to uncaught exception 'NSGenericException', reason: 'UIPopoverPresentationController (<UIPopoverPresentationController: xxxxxxxxxxxxxx>) should have a non-nil sourceView or barButtonItem set before the presentation occurs.'
*/
struct CrashView: View {
    @State private var popover: Popover?

    var body: some View {
        Button("Bar") {
            self.popover = .bar
        }
        .popover(item: $popover) { _ in
            Button("Dismiss") {
                self.popover = nil
            }
        }
    }
}

extension CrashView {
    enum Popover: Hashable, Identifiable {
        case bar

        var id: Self {
            self
        }
    }
}