This scenario is without any screen reader was observed while testing for some other scenarios. This looks related to how listeners are handled in the demo itself but not sure.

To Reproduce:

1. Run HelloTableView from Command Prompt
2. Keep the command windows visible simultaneouly with the table window.
3. Press Tab to take the focus to the table
4. Press down arrow, row with First Name Isabella and Invited unchecked will have visible focus
5. Check Invited Checkbox on row Isabella using mouse
6. Press down arrow twice, now focus is shown at row with First Name Emma.
7. Press Space Bar

Expected:

Checkbox Invited in the same row as Emma checked.

Actual:

But the checkbox in the row Isabella is getting unchecked. So eventhough the visible keyboard focus is at row with Emma, mouse focus is getting used.