If you have any bug issues, please make sure you post them to the 3.1 bug page on elanthipedia.

http://elanthipedia.org/w/index.php/Magic_3.1_Comments#Thief_3

This is where the GMs are tracking bugs and such, for right-this-very-moment; if it's not on there, I'm not saying it won't get addressed, it's just got a better chance of being noticed.