I want to use locking on a custom workflow, but it is not working for me. The status menu will show only the other statuses I have predesignated, but all of the other statuses show up under "more", and they can be selected.

Why would these show up if I don't want them to be used, and why are they selectable? Also the additional workflows, Space and Account, should not be visible either. In order for my workflow to work correctly, I need to lock users into selecting only certain statuses, not just have it be a suggestion.
The info popup states how it should work, but it is not working that way.

Am I missing something?