TextEdit selection is cleared when opening a Copy/Paste context menu

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12

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

  TextField {
    id: tf
    anchors.centerIn: parent
    width: 400
    text: "Bla Bla"
    selectByMouse: true

    TapHandler {
      acceptedButtons: Qt.RightButton
      onTapped: menu.popup(tf)
    }

    Menu {
      id: menu
      MenuItem {
        focusPolicy: Qt.NoFocus
        text: "Copy"
        enabled: tf.selectedText !== ""
        onTriggered: tf.copy()
      }
      MenuItem {
        focusPolicy: Qt.NoFocus
        text: "Cut"
        enabled: tf.selectedText !== "" && !tf.readOnly
        onTriggered: tf.cut()
      }
      MenuItem {
        focusPolicy: Qt.NoFocus
        text: "Paste"
        onTriggered: tf.paste()
      }
    }
  }
}