1 - Create a QTableWidget and fill it with more than three "pages" of items.

2 - Set few of the items as hidden on the top of the table, using QTableWidget::setRowHidden(true), Set the first row hidden.

3 - Select the last row and use PageUp key to scoll upwards on the table.

The PageUp key should stop working once the first row is visible on the table, however the command fails to reach the top of the list and stops working when few rows are still above the first visible row.