Adding new rows to QML TableView causes a strange mouse-hovering reaction

Adding new rows to QML TableView, while mouse-cursor is hovering on the table, causes color-flickering here and there on the table.

How to reproduce the issue:
1) Run the attached reproducer
2) Hover your mouse cursur to anywhere on the table. Never click anywhere on the screen before hovering the cursur. You will see the color of the hovered cell is changed.
3) Press any key to add new rows to the table. You will see the unrelated cells change their colors like they are mouse cursur hovered, here and there every time you press the key, while the cursur is not moving.