[regression] KeyboardLayoutChange is not detected

class Me: public QWidget
{
    Q_OBJECT
public:
    Me(): QWidget() {
        setGeometry(300,300,600,600);
        qDebug() << "done";
    }
    bool event(QEvent *ev) {
        if (ev->type() == QEvent::KeyboardLayoutChange) {
            qDebug() << "kb layout changed";
        } else {
            return QWidget::event(ev);
        }

    }
};

int main(int argc, char* argv[]) {
   QApplication app(argc, argv);
   qDebug() << qVersion();
   Me es;
   es.show();
   return app.exec();
};