Corrected entry: Raj talks aloud whilst Penny is still in the room.
Corrected entry: At the end of this episode when Penny asks to use Leonard and Sheldon's bathroom for a shower, when she goes down the hallway towards the bathroom/bedrooms, she turns past the bathroom (the door that is visible from the living room) and turns right and goes towards the bedrooms.
Correction: Penny could simply be going to grab a towel from the linen closet before having her shower.
Corrected entry: When Howard is showing Penny the online game and Penny expresses interest, Raj says "Smooth", even though Penny is right there - breaking his mutism rule.
Correction: This has never been a diagnosed condition in his case. In Episode 13 of the same season, during a group conversation he accidentally says "good story" with Penny present and immediately realized that he talked in front of a female then covered his mouth. This is just a individual non-medical problem.
Correction: Raj enters the room while Penny is in the bathroom about to take a shower. Raj does talk but, doesn't yet know she's there.