1 hide = they see all around for stealing
2 Larian changed the way stealing works after EA... now its the Fuckpunk system where cops drop from the sky knowing it was you
dont have the item on you, dont put up a fight and you get one free trip to jail which is easy to escape [wait 10 turns for debuff to go away] and you are golden
need another item nixed without fighting = take it in turn mode then change to normal mode and jump away [fast travel] then don't bring that character back i.e swap them out
advantage dex [Enhance Ability], Invisible [various ways] and have your Bard perform as a distraction are all good options to improve chances