Works for me. Please give examples and detailed steps so that I do not have to hunt for them.
The good news is I was wrong! I seem to have accidentally put in space characters around a backslash, so the link was wrong the whole time, I just never saw it before - because of the old Special:myLanguage behaviour the link used to show up blue. This actually confirms that the changed you made at the sprint was a really Good Thing(tm).
I do feel stupid, though, not to have investigated the problem a bit before complaining. Sorry about that.