QQmlContext::nameForObject() with ApplicationWindow causes creation of many QQuickScreenInfo objects

class test: public QObject {
  Q_OBJECT

public:
  Q_INVOKABLE void testIt(QObject *obj) {
    qDebug() << "test.testIt()" << obj;

    qDebug() << "Num children before:" << obj->children().size();

    for (auto current : obj->children()) {

      QQmlContext *objContext = qmlContext(current);

      if(!objContext && current && current->parent()) objContext = qmlContext(current->parent());

      if(objContext) {
        // causes a new QQuickScreenInfo instance to be added to the list of children
        auto id = objContext->nameForObject(current);

      //  qDebug() << "id for" << current << "=" << id;
      }
    }
    qDebug() << "Num children after:" << obj->children().size();
  }
};

#include "main.moc"

int main(int argc, char *argv[])
{
  QGuiApplication app(argc, argv);

  QQmlApplicationEngine engine;
  const QUrl url(u"qrc:/ScreenInfoBugTest/main.qml"_qs);
  QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
                   &app, [url](QObject *obj, const QUrl &objUrl) {
    if (!obj && url == objUrl)
      QCoreApplication::exit(-1);
  }, Qt::QueuedConnection);


  test t;
  engine.rootContext()->setContextProperty("test", &t);

  engine.load(url);

  return app.exec();
}

import QtQuick
import QtQuick.Window
import QtQuick.Controls

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

  MouseArea {
    anchors.fill: parent
    onClicked: test.testIt(window)
  }
}

test.testIt() ApplicationWindow_QMLTYPE_1(0x600001ce43c0)
Num children before: 2
Num children after: 3
test.testIt() ApplicationWindow_QMLTYPE_1(0x600001ce43c0)
Num children before: 3
Num children after: 5
test.testIt() ApplicationWindow_QMLTYPE_1(0x600001ce43c0)
Num children before: 5
Num children after: 9
test.testIt() ApplicationWindow_QMLTYPE_1(0x600001ce43c0)
Num children before: 9
Num children after: 17
test.testIt() ApplicationWindow_QMLTYPE_1(0x600001ce43c0)
Num children before: 17
Num children after: 33
test.testIt() ApplicationWindow_QMLTYPE_1(0x600001ce43c0)
Num children before: 33
Num children after: 65
test.testIt() ApplicationWindow_QMLTYPE_1(0x600001ce43c0)
Num children before: 65
Num children after: 129
test.testIt() ApplicationWindow_QMLTYPE_1(0x600001ce43c0)
Num children before: 129
Num children after: 257