Noted on most my level 85s, when playing cata classic, going to WG there is a big bug.
People are getting over the barrier that is up before the game starts, by having a seat placed up close to the barrier, be that a mushroom chair or a mount. They then hit to get off of it, landing on the other side of the barrier.
I’ve watched both sides do it, but I will say that Alliance has most of their people in the game prior to the start of the game, than what I’ve seen Horde do. That’s only what I see from when I play, so it could be most of both sides.
It needs to be fixed, though.