a serious problem on Android, which will cause the application crashed

import QtQuick 2.14
import QtQuick.Controls 2.14
import QtQuick.Window 2.14

Window {
    id: rootWindow

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

    Column {
        anchors.fill: parent
        focus: true

        TextInput {
            width: parent.width

            Keys.onEscapePressed: {
                event.accepted = true;
            }
            Keys.onBackPressed: {
                event.accepted = true;
            }
        }

        Keys.onEscapePressed: {
            event.accepted = true;
        }
        Keys.onBackPressed: {
            event.accepted = true;
        }
    }
}