QML Dialog standard buttons not retranslated under Windows OS

import QtQuick
import QtQuick.Controls

Window {
  width: 400
  height: 400
  visible: true

  Dialog {
    id: dialog
    width: 300
    height: 300
    anchors.centerIn: parent
    visible: true
    contentItem: Item {
      ComboBox {
        anchors.centerIn: parent
        model: ["ru", "en"]
        onCurrentTextChanged: {
          translator.setLanguage(currentText)
        }
      }
    }

    standardButtons: Dialog.Ok | Dialog.Cancel | Dialog.Apply
  }
}

void Translator::setLanguage(const QString& languageCode)
{
    const auto qtTrDir = QLibraryInfo::path(QLibraryInfo::TranslationsPath);
    const auto wasEmpty = qtTranslator_.isEmpty();
    assert(qtTranslator_.load(QString\{"qt_%1.qm"}.arg(languageCode), qtTrDir));

    if (wasEmpty) {
        assert(QCoreApplication::installTranslator(&qtTranslator_));
    }

    engine_->retranslate();
}