Changing currentIndex of QStackedWidget when native widget exist will cause crash

#include <QtWidgets>

class TabWidget:public QTabWidget
{
public:
    TabWidget(QWidget* parent=0)
        :QTabWidget(parent)
    {
        addTab(new QPushButton("Test"), "1");

        QPushButton * btn = new QPushButton("Test2");
        btn->setAttribute(Qt::WA_NativeWindow);
        addTab(btn, "2");
    }
};

int main(int argc, char** argv)
{
    QApplication a(argc, argv);
    TabWidget w;
    w.show();
    return a.exec();
}

ASSERT: "widget->isVisible() && widget->updatesEnabled()" in file kernel\qwidgetbackingstore.cpp, line 474