I had a problem when trying to use the chat bar thing at the bottom to talk to friends. When I click a person's name, the name appears in the bar, but there's no pop up chatbox or anything. When a friend tries to talk to me on it, the name will appear, with notification, but when I click on it, the notification disappears and nothing else happens.

I have no problems using the chatrooms.

No big issue since I realise this problem only exists in google chrome. Now I'm switching to firefox to play this game, and that feature works just fine on firefox. Just though I should let you know. =)

Sadly, there really isn't much they can do, seeing as CometChat is an independent program, and isn't controlled by the site. :( Krin has said before he wouldn't even know where to start looking for bugs, so sadly we all just have to hop around browsers until CometChat decides it likes one. XD Personally for me, it never worked on Internet Explorer, but works just fine on Google Chrome.
Sorry I couldn't be the bearer of good news!