Thank you for the fix and tests! It looks like this doesn't work to select the value using Enter and there is also an issue where the modal immediately closes when you use Enter to open it after selecting something:

This also happens on the Popover example.

I think we need to add something like this to onKeyDown in radio-group to capture the value:

// Handle Enter key for select interfaces
if (['Enter'].includes(ev.key) && inSelectInterface) {
  const previousValue = this.value;
  this.value = current.value;
  if (previousValue !== this.value) {
    this.emitValueChange(ev);
  }
  ev.preventDefault();
}

But I'm not sure how to fix the other problem right now.