Not sure if its a bug, but in my game, even if you get away with pickpocketing the shadow thieves, they turn hostile again when you re-enter the area, and then of cos its game over for you. Does anyone have a similar experience?

Note that the engine treats a failed pickpocket check as an attack. Sometimes, it takes a while for this to kick in i.e. when you make several consecutive pickpocket attempts.

BTW, the Shadow Thieves are fairly difficult to pickpocket because they have thief class levels. Any other character with thief levels acts the same.

If it happens after successful pickpockets, then it is a bug; but it has certainly nothing to do with IA. You will need to send me the content of your WeiDu.log file (copy and paste its content).

My experience is it only happens if you use the fake talk tactics to pickpocket. If the pick failed and you talked to the target he remain neutral but there is a small chance that he turn agains you later.