So many things are bugged in Cata Classic.
In Vashjir, I was able to start the initial quests again after I’d already completed them and handed them in. They just showed up again in a slightly different location.
So many mobs and NPCs disappearing and reappearing, and disappearing again.
Mounts in several quests not working.
Quests in Blackrock Caverns not auto-updating as you move through the dungeon.
Not able to pick up any dungeon quests in Throne of the Tides.
Frequent server lag and disconnects.
This isn’t a bug report, so much as a complaint about the sheer quantity of bugs still left in Cataclysm Classic, and how much they’re detracting from my enjoyment of the game.