Can't submit "More actions" button with enter key

[maxime-rainville]

Steps to reproduce

• Access an elemental block page.
• Navigate to the "More actions" button for a block using the tab key.
• Press the "enter" key to toggle the "More action" button.
• Use the arrow key to select one of the action.
• Press the "enter" key

Expected behaviour

• The selection action is triggered

Actual behaviour

• Nothing happens

NB: The space key works fine.

[brynwhyman]

Ah, I've raised this before too: https://github.com/dnadesign/silverstripe-elemental/issues/677

To be clear, you'd expect that either the space key or the enter could be used to select an option?

[maxime-rainville]

Yes, I expect Enter and SpaceBar to have the same affect.