Actually, i found PWO years ago while i was watching an anime on Animefreak it was an ad below the player I couldn't pass it up, and the rest as they say, is that.
I think that all bugs (no matter how minor) go into the tracker, correct me if i'm wrong <img src="http://www.pokemon-world-online.net/forum/public/style_emoticons/<#EMO_DIR#>/BulbasaurSilly.png" class="bbc_emoticon" alt=":P" />
That technically is already on the playerdex, for example a Charizard can learn Dragon Claw and Shadow Claw from the list but it will not learn it otherwise, so that is the same, right?
I'm going to assume at the point this even WOULD be in pwo, you would be forced to have a party of 2, which would be a cool idea for a 2 on 2 involving 4 trainers at once.