User blog comment:BertH/New Forums now available in Labs/@comment-188432-20121205151354

On no topic input box — not the one when you start the discussion, nor the one when you add it later — can you enter an article name that has anything less than three characters. So it tells you that there is no such article as Pi, or 14 or 79 or 92 but it's happy enough taking 102.

This is going to be a bigger or hardship on some wikis than others. We're sensitive to it at tardis, because we have several articles on years in the first century. The people at w:c:jamesbond will be profoundly affected, because they can't set as topics M or Q. (Or even R.)