I noticed this a few times in group conversations: if you use the Talk button while reading one character's line, you don't actually address that character. Whatever action or response you make, it gets "targeted" at the next character in the group. And you don't actually know who that is, unless you hint at that in dialogue. I ended up giving money to some other characters when talking to Gareth at the tavern more than once [to clarify, Give gold works as expected, I mean in dailogue].
In my most recent interaction it looked like this: Aldric, Gareth, Darian and Mirel are in the tavern and I start a conversation with all of them. In the course of the conversation I give an item to Aldric (that works as expected) and he pays me by sliding 20 gold onto the counter. For some reason the game does not give the money to me directly, but I noticed this is not a problem usually. I then explicitly say I slide the money to Gareth for some drinks, but it ends up as if i gave the money back to Aldric. And to make maters worse, now it deduced that sum from my personal inventory.
On another occasion I was talking to Rosalyn and Hayden and one of them proposed something. I said that it was a great idea, lets do that. Then the other one responds as if that remark was addressed to them, and not the previous character.
Not strictly a bug per se, but something that could be improved.