Drawer: cannot drag to close from the outside on touch

import QtQuick 2.7
import QtQuick.Window 2.2
import QtQuick.Layouts 1.3
import QtQuick.Controls 2.0

ApplicationWindow {
    id: window
    width: 360
    height: 360
    visible: true

    Drawer {
        id: drawer
        width: window.width * 0.8
        height: window.height
    }

    Button {
        text: "Open"
        onClicked: drawer.open()
        anchors.centerIn: parent
    }
}