Don't think so, because it displays "0" charisma bonus in the Rock, Paper, Scissors mini-game, which it shouldn't do if you in fact have one. So, sure, other factors may figure into the equation, but it shouldn't say you get nothing when it's clear the bonus is present.
Further, this is also the case when one of my characters opposes the other in conversation and then the game proceeds to Rock, Paper, Scissors between my two main characters. Previously, this gave the advantage to my party leader, who has the +2. Now it doesn't, even though my other character has a charisma of zero.
- Geezer
