Even when editInput returns a non-null value, editor.php still generates the radio list. (I'm trying to get editor.php to generate a HTML drop-down list instead of radio buttons for enum fields that have many options)
Example extension file
You seem to have CSS turned off.
Please don't fill out this field.
Thank you for the report, I've fixed it in Git.
Thank you for resolution, and for making an amazing product. Best wishes.