Thanks for your quick answer. I didn't try that though, because I can't do that yet. I would be tempted to change some things, I would not be able to have the same spontaneity that I've had with my character since the beginning (knowing things I was not supposed to know back then.) If the bug can't be solved, I would try to finish the chapter without saying anything...
First choice: many hours to re-do some chapters whereas the original poster of this thread said rewinding didn't help him, losing the authenticity of my character and "cheating" in order to be nicer with some characters...
Second choice: my friendship with Kenny would probably be over at this point, somehow (I think so,) and I would be dumbfounded and kinda ungrateful to the team, which does not suit me either.
The best way would be the third though: having a fix for this bug.
Like Attenoel said, if we are four to have had this bug, it's reproducible, isn't it?
Please excuse my bad English.
Edit: I didn't saw your edited message.
I'm playing on PC, I have the TTG Store version, I'm not running the game in compatibility mode (or at least, if I do, it's not my choice,) I don't understand "workaround," and as you know, I didn't try rewinding.