Inconsistency in clickable widgets when a selection is held down

Inconsistency in clickable widgets when a selection is held down . In this example the button widget reacts only once, while the combo box appears to repeatedly fire while the enter key is held

1. Open the editor
2. Create a new widget blueprint
3. Add a combo box to the designer tab
4. Add three options
5. Add a button to the designer tab
6. Compile and save
7. Open the level blueprint
8. Add the widget that was just created to the viewport on begin play
9. Click the button to give it focus
10. Press the Enter key on the key board and hold down the button
11. Notice that the button only reacts to the initial press of the Enter key
12. Click on the combo box to give it focus
13. Press the Enter key on the key board and hold down the button
14. Notice that the combo box rapidly opens and closes

Expected: The reactions between widgets would be consistent (repeatedly reacting to the held button or reacting only once) or an option would be available to the widgets reaction to repeat or toggle
Result: The button widget reacts only once, while the combo box appears to repeatedly fire while the enter key is held