Dialog should emit rejected() when CloseOnEscape is triggered

import QtQuick 2.8
import QtQuick.Layouts 1.3
import QtQuick.Controls 2.1

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")

    Dialog {
        id: dialog
        modal: true
        focus: true
        Component.onCompleted: visible = true
        implicitWidth: 500
        implicitHeight: 400

        standardButtons: Dialog.Ok | Dialog.Cancel
        onRejected: print("rej")
    }
}

#include <QApplication>
#include <QDialog>
#include <QDebug>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QDialog dialog;
    QObject::connect(&dialog, &QDialog::rejected, []() {
        qDebug() << "Rejected!";
    });

    dialog.show();

    return a.exec();
}