QSqlTableModel emits invalid index in dataChanged() (causing QSortFilterProxyModel ASSERT)

Attached you find a sample GUI program which shows the culprit.

It uses a MySQL (MariaDB) table to insert and delete rows.

First add two new rows using the "Add" button.
Next remove them using the "Remove" button (select the row to delete in the table view).

After pressing the secon time the "Remove" button the program aborts.

Attached you find also a backtrace (qt and application was compiled in debug mode) when program aborts.