AXUIElementCopyElementAtPosition bug

import Cocoa
import SwiftUI
import AppKit

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {

    var window: NSWindow!


    func applicationDidFinishLaunching(_ aNotification: Notification) {
        var axUIElement: AXUIElement? = nil
        let copyElementResponse = AXUIElementCopyElementAtPosition(
          AXUIElementCreateSystemWide(),
          Float(NSScreen.screens.first!.frame.size.width + NSScreen.screens.last!.frame.size.width / 2),
          Float(NSScreen.screens.last!.frame.size.height / 2),
          &axUIElement
        )
        print("response: \(copyElementResponse)")
        print("element: \(axUIElement)")
    }

    func applicationWillTerminate(_ aNotification: Notification) {
        // Insert code here to tear down your application
    }


}