When attempting to speak with Amaji in Kugane (x:9.3,y:8.2) the game stopped allowing me to use any of the face buttons on my controller, but the right analog stick still allows me to look around and I have a few limited abilities. I also cannot select "Log Out" or "Exit Game" from the start menu to exit and attempt to log back in.
I can still see other players running around and chat in all of the chat channels, so I know my game is not frozen.