Hmm, I vaguely recall this coming up before and someone ended up providing some pretty solid evidence that it was in game during classic era. But yeah this is obv a bugs forum thing - you can post there without doing research just to get the conversation started. Of course, my vague recollection has been known to be inaccurate:
http://www.project1999.com/forums/sh...62&postcount=2
I use it every single play session and would hate it if it were removed - if it indeed isn't classic, which seems to be the case, I would categorize it as a worthwhile quality of life feature like item linking and queued tells.
Also, the "bugs" in bugs forum has always been a misnomer - it's primarily a place where people post things that aren't classic and provide research for it to be changed.