Bug In Google Chat Module???

Hey,
Today I noticed small funny bug in Google Chat module.
Just posting for u r information.
Try to send *** (Three star) to you friend, He will get single star.
Now, send ** (Two star), he will get as it is.
Now, send **** (Four star), he will get 4-2 = 2 star.
Does Google chat has some issue with number 3 🙂

regards