Using "Hide" with IR/NA

How does the "Hide when not relevant" feature work in the form? There is a “Not applicable” option in the multiple-choice menus, but these do not hide. What does hide, however, are the options found in the additional menu for each question. Is this the expected behavior? I personally feel that this feature should also hide the options in multiple-choice questions.

I’ve only tested this in the preview mode, but based on the help text, that shouldn’t make a difference