The strange behaviour of the tab order in QTableWidget class.

[Mad Max]

#include <QtGui/QApplication>
#include <QtGui/QDialog>
#include <QtGui/QTableWidget>
#include <QtGui/QVBoxLayout>
#include <QtGui/QLineEdit>
int main(int argc, char *argv[])
{
   QApplication a(argc, argv);
   QDialog w;
   QVBoxLayout vboxLayout;
   w.setLayout(&vboxLayout);
   QLineEdit edit(&w);
   vboxLayout.addWidget(&edit);
   QTableWidget table(&w);
   table.setRowCount(1);
   table.setColumnCount(3);
   table.setTabKeyNavigation(false);
   vboxLayout.addWidget(&table);
   QLineEdit edit2(&w);
   vboxLayout.addWidget(&edit2);
   w.show();
   a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
   return a.exec();
}

#include <QtGui/QApplication>
#include <QtGui/QDialog>
#include <QtGui/QTableWidget>
#include <QtGui/QVBoxLayout>
#include <QtGui/QLineEdit>
int main(int argc, char *argv[])
{
   QApplication a(argc, argv);
   QDialog w;
   QVBoxLayout vboxLayout;
   w.setLayout(&vboxLayout);
   QLineEdit edit(&w);
   vboxLayout.addWidget(&edit);
   QTableWidget table(&w);
   table.setRowCount(1);
   table.setColumnCount(3);
   table.setTabKeyNavigation(false);
   vboxLayout.addWidget(&table);
   QLineEdit edit2(&w);
   vboxLayout.addWidget(&edit2);
   w.show();
   a.connect(&a, SIGNAL(lastWindowClosed()), &a, SLOT(quit()));
   return a.exec();
}

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I observe a strange behaviour of the tab order in this form. At start it has the order: edit->table->edit2, after the editing of any column the tab order change to: edit->edit2->table. Can anyone tell me why it happen? I am in the doubts