[QComboBox] calling view() before setModel() breaks signal highlighted(int)

#include <QtGui>

class MyApplication : public QApplication
{
   Q_OBJECT
public:
   MyApplication(int &argc, char **argv) : QApplication(argc, argv) {}

public slots:
   void highlighted(int i) { qDebug() << i << "has been highlighted"; }
};
#include "main.moc"

int main(int argc, char **argv)
{
   MyApplication app(argc, argv);

   QComboBox cob;
   app.connect(&cob, SIGNAL(highlighted(int)), SLOT(highlighted(int)));
   // Calling view() before setting the model makes highlighted() not work
   // (In a subclass of QComboBox I had a QAction added to the view(),
   //  this resulted in the highlighted() signal no longer being emitted.)

   cob.view(); // comment this line to make the highlighted(int) signal work again

   QStandardItemModel sim;
   for(int i=0;i<5;i++)
      sim.appendRow(new QStandardItem(QString::number(i)));
   cob.setModel(&sim);
   cob.setModelColumn(0);
   cob.show();
   return app.exec();
}