QComboBox doesn't remember text if it's been set before the first addItem()

QComboBox doesn't remember text if it's been set before the first addItem().

This can be seen in the following example :

#include <QComboBox>
#include <QApplication>
#include <QLineEdit>
int main(int argc, char **argv) {
QApplication app(argc, argv);
QComboBox box;
box.setEditable(true);
box.setEditText ( "My custom choice 1 vanishes" );
box.addItem("Standard choice 1");
box.addItem("Standard choice 2");
// box.setEditText ( "My custom choice 2 this stays" );
box.show();
return app.exec();
}