QTabBar : setUsesScrollButtons not working like expected?

Sometimes when setting setUsesScrollButtons on a QTabBar to false, it will still appear. It seems that as soon as you put this widget in another widget this setting is ignored. If you set it after it has been put into its parent widget it does work.

#include <QtGui>
int main(int argc, char* argv[]){
QApplication app(argc, argv);

QTabWidget tabWidget;
QWidget* pWidget = new QWidget;
pWidget->setObjectName("test1");
QWidget* pWidget2 = new QWidget;
pWidget2->setObjectName("test12");
QWidget* pWidget3 = new QWidget;
pWidget3->setObjectName("test13");
QWidget* pWidget4 = new QWidget;
pWidget4->setObjectName("test14");

pWidget->setProperty("name","test QTabBar");
tabWidget.addTab(pWidget, "foo");
tabWidget.addTab(pWidget2, "foo");
tabWidget.addTab(pWidget3, "foo");
tabWidget.addTab(pWidget4, "foo");
tabWidget.setUsesScrollButtons(false);
tabWidget.setStyleSheet("QTabBar::tab

QTabBar::tab:test1

");
tabWidget.show();

QTabBar *RecordTabBar = new QTabBar();
RecordTabBar->setGeometry(QRect(358, 337, 691, 61));
RecordTabBar->addTab("Tab 1");
RecordTabBar->addTab("Tab 2");
RecordTabBar->addTab("Tab 3");
RecordTabBar->addTab("Tab 4");
RecordTabBar->setStyleSheet("QTabBar::tab

QTabBar::tab:test1

");
RecordTabBar->setUsesScrollButtons(false);
RecordTabBar->show();
return app.exec();
}

This behavior is hardly consistent.