QToolBar incorrect display on Windows 11

int main(int argc, char* argv[])
{
    QApplication a(argc, argv);
    QMainWindow mw;
    auto tb = new QToolBar;
    mw.addToolBar(tb);
    auto a1 = new QAction("Act 1");
    auto a2 = new QAction("Act 2");
    tb->addAction(a1);
    tb->addAction(a2);
    a1->setCheckable(true);
    a2->setCheckable(true);
    a2->setChecked(true);
    auto menu = mw.menuBar()->addMenu("Menu");
    menu->addAction(a1);
    menu->addAction(a2);
    auto centralWidget = new QWidget;
    auto lay = new QHBoxLayout(centralWidget);
    auto pb = new QPushButton("Push me!");
    pb->setCheckable(true);
    lay->addWidget(pb);
    lay->addWidget(new QCheckBox("CheckBox"));
    lay->addWidget(new QRadioButton("Radio Button"));
    mw.setCentralWidget(centralWidget);
    mw.show();
    return app.exec();
}