QTableWidget selection is buggy when cells contain widgets

Running the code below, hold down LMB in the left cell, then drag the mouse cursor to the right cell.
The right cell is now selected, but shouldn't be.

// --------------------------------------------------------------
#include <QtGui>

int main( int argc, char * argv[] )
{
QApplication app( argc, argv );
QTableWidget table( 1, 2 );
table.setSelectionMode( QAbstractItemView::NoSelection );
table.setCellWidget( 0, 1, new QCheckBox() );
table.show();
return app.exec();
}
// --------------------------------------------------------------