Ctrl+S shortcut in ApplicationWindow does not work

import QtQuick 2.12
import QtQuick.Controls 2.12

ApplicationWindow {
    id: window
    visible: true
    width: 640
    height: 480

    Shortcut {
        sequence: "Esc"
        context: Qt.ApplicationShortcut
        onActivated: console.log("ESC")
    }

    Shortcut {
        sequence: "Ctrl+S"
        context: Qt.ApplicationShortcut
        onActivated: console.log("CS")
    }

    Shortcut {
        sequence: "Alt+S"
        context: Qt.ApplicationShortcut
        onActivated: console.log("AS")
    }
}