I've run into a similar problem before. I think this might have been caused by the wrong tab being selected.
If you select the "unanswered" tab of the "meaning" tag it currently displays 0 questions. The "faq" and "unanswered" tabs only show questions which are linked to and questions that have no upvoted answers respectively. You need to select the "newest", "votes" or "active" tabs to ensure that all questions will be displayed.
I actually think this is a usability problem. I feel it would be better if the text on the right said "0 tagged questions in this tab" or something rather than "0 questions tagged" as I didn't associate that number with the tab the first time I read it.