Other mistake: In Abby's scene when she is required to bring refreshments to the meeting room, all the drama happens because there's a chair blocking her way to the left of the table. Any sane person would just walk to the right of the table. She has all the space in the world to do that, but the plot to work she appears to be unironically too stupid to even consider the possibility. She also has room to put the tray down without moving a step. (also, as a bonus, the hand of one of the guests is embedded inside the table, just the thumb sticking out).
Revealing mistake: Several times during the game the name of the person saying a line followed by a colon (so, the basic formatting of the script) appears in the actual line of dialogue, sometimes together with the proper name field, other times with no name field at all.
Character mistake: During the intro, in one line of dialogue Brigitte's name loses the B.