QSpinBox up/down arrow selects texts and show text menu

Simply execute this program showing a QSpinBox:

 
#include <QMainWindow>
#include <QSpinBox>
#include <QVBoxLayout>
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

    QMainWindow w;
    w.setCentralWidget( new QWidget() );
    w.centralWidget()->setLayout( new QVBoxLayout() );
    w.centralWidget()->layout()->addWidget( new QSpinBox() );

    w.show();
    return a.exec();
}

When you run it under Android, after you press the up or down QSpinBox arrow, the whole QSpinBox edit field text gets selected and Edit menu is shown (proposing to Copy/Paste/Select all...). This is really annoying.

See attached video.

Any workaround (at QApplication level, as I have many many QSpinBox in my app) would be appreciated.