This is still an issue as I just got the flaw. In fact, being the control freak that I am, I checked to see exactly what stats fall under the "Personality" group (which is what Paranoia says it affects) and mere seconds after accepting the Flaw Perk it shows -3 to all stats in that group. Something is tripling the number or it is coded wrong in the message. Either way, I would not have taken it if I realized it was that harsh. Single-player game on PS4. I do not have time to restart another character... again... just to remove the bugged flaw affects. I already had to do that once, this character, because I respecced and all my Flaw perk points disappeared but I still had all the Flaws.
I am sending a message to the support as you suggested, but wanted to post here, too. This way others can see this and hope it will help get them on the right track, too.