[quote=The_Red_QueenIf you try to play the game being as stealthy as possible, it’s guaranteed you’re going to come across broken, dodgy behaviour. It’s why I don’t do it, though I wish I could.[/quote]
I think I found a comfortable alternative to this kind of thing. My current playthrough, I'm using Astarion. I unchain him from the group, enter the dialoge / fight. Then position him via stealth or potion if necessary and get a free backstab. I feel that it's very fitting from a RP standpoint to have a rogue / thief hiding in the shadows. Feels like it would be in a thiefs nature to do that. Then he gets put into combat after getting a backstab.
I did find one situation where he got away with a 1 shot kill and didn't trigger combat (Zhentaram Outpost). It felt like he systematically took out a couple targets to give us the advantage.