Labs Platform: Missing MenuSeparator on macOS

import QtQuick 2.9
import QtQuick.Layouts 1.3
import QtQuick.Controls 2.2
import Qt.labs.platform 1.0 as Platform

ApplicationWindow {
    width: 800
    height: 800
    visible: true

    Platform.MenuBar {
        Platform.Menu {
            id: editMenu
            objectName: "editMenu"
            title: qsTr("Edit")

            Platform.MenuItem {
                text: "test"
            }

            Platform.MenuSeparator {}

            Platform.MenuItem {
                objectName: "selectAllMenuItem"
                text: qsTr("Select All")
            }
        }
    }
}