An issue that allowed players to maneuver certain NPCs into a position where they could be attacked but could not retaliate has been corrected.
I wonder if that is standing behind the pipes in the heroic on Nar Shaddaa.
I also hit a bug right away; I had to repeat part of a quest that I completed last night in the Tatooine bonus quests series. Got to even do the dialoged again, but the game was smart enough not to give me the lightside, xp or the reward again. Still no complaint since the xp from the kills got me to level 28.