QFileDialog::getSaveFileName returns messed up filename using multiple filters

According to the documentation multiple filters should be indicated using (*.png *.jpg *.bmp)

However, if I used the attached project of QTBUG-29902 and add as a last line

 
QMessageBox::information(0, QString(), QFileDialog::getSaveFileName( 0,
                                              app.tr("Please, select export file name"),
                                              QString("justPressEnter"),
                                              app.tr("Images (*.png *.xpm *.jpg);;All files (.*)") ));

Moreover adding #includes to QMessageBox and QString, of course. When I enter in the file dialog "test" without any extension and press save, then I get:

 c:/Data/test.png *xpm *.jpg

The same in 4.8 didn't append the other extensions to the filename, which is really not expected. As I minor note I want to point out, that the filepath shows slashes instead of backslashes (windows style)