Qt Creator does not recognize attached properties of Overlay in Popup

import QtQuick 2.13
import QtQuick.Controls 2.13

ApplicationWindow {
    id: window
    
    width: 400
    height: 400
    visible: true

    Button {
        text: "Open"
        onClicked: popup.open()
    }

    Popup {
        id: popup
        parent: Overlay.overlay
        x: Math.round((parent.width - width) / 2)
        y: Math.round((parent.height - height) / 2)
        modal: true
        width: 100
        height: 100

        Overlay.modal: Rectangle {  // Invalid property name "Overlay". (M16)
            color: "#aadc143c"
        }
    }
}