I'd say that is intentional, though. The second phrasing won't give you any good results if you're trying to determine the usability of a UI design. Normal use

I'd say that is intentional, though. The second phrasing won't give you any good results if you're trying to determine the usability of a UI design. Normal users do not hunt for hidden options the moment they encounter a use case for them. In fact, most would probably assume the feature isn't there even if they realized they had a need for a somewhat generic functionality such as moving to ../ If you offer someone money for finding out about something they don't know about, you change their motivation, which is thus completely different from what they encounter in their day to day use of that software. And the latter is the thing you want to improve in the end.