struct ContentView: View {

    var body: some View {
#if os(macOS)
        VStack {
            Button("Open Window 2") {
                Window2().openInWindow(title: "Window 2", sender: self)
            }
            .contextMenu {
                Button("window1menuItem") {
                    // Action for window1menuItem
                }
            }
            Image(systemName: "globe")
                .imageScale(.large)
                .foregroundStyle(.tint)
            Text("Hello, world!")
        }
#endif
    }
}

struct Window2: View {
    var body: some View {
        Text("This is Window 2")
            .frame(width: 300, height: 200)
            .contextMenu {
                Button("window2menuItem") {
                    // Action for window2menuItem
                }
            }
    }

    func openInWindow(title: String, sender: Any?) {
#if os(macOS)
        let window = NSWindow(
            contentRect: NSRect(x: 20, y: 20, width: 280, height: 200),
            styleMask: [.titled, .closable, .miniaturizable, .resizable],
            backing: .buffered, defer: false)
        window.center()
        window.setFrameAutosaveName(title)
        window.contentView = NSHostingView(rootView: self)
        window.makeKeyAndOrderFront(sender)
#endif
    }
}

#Preview {
    ContentView()
}

crashes like so

when closing window2 with the red dot in the top left corner.
Questions:

1. Is there anything obviously wrong with my sample app
2. Is SwiftUI best avoided for production grade apps targeting MacOS & iPadOS yet?
   Thanks. Sonoma 14.4.1 Xcode 15.3