Whenever a cell in QTableView is selected, an unrelated QPushButton gains focus too

I have a QTabWidget, that on a particular tab holds a QTableView subclass and a QHBoxLayout of QPushButtons (Insert, Delete, Fill/Calc, Copy, Paste).

Attachment 10730

The red circles show that whenever I make a selection in the `QTableView`, the `Insert` button also gains selection.

Attachment 10729

As a result, when the user types into the Segment Name line edit and hits enter (to submit the changes), the changes are submitted *and the insert button is activated*.

What can I do to make the QTableView cells and the Insert button mutually exclusive for selection?

In other words, when a user clicks on a table cell I do not want any buttons to also be selected.