User blog comment:Ohmyn0/What's Going on with Chat/@comment-1997905-20110419195745

The new window is kind of annoying, but going to Special:Chat in a new tab fixes that, and it's still beta so I'm not complaining. One thing that would be great is personal CSS and JS pages in the chat window - Toughpigs explained how you guys are prioritizing right now, but it's only two quick lines, so I think you can do it :D Hooks at the end of all the important functions would be nice (like addOnloadHook, except that it it executes every time a new message is added to your window) because it'll be quite hard to write JS for chat otherwise.

Also, almost forgot: If you have chat open twice, the two windows take turns disconnecting each other. One of them disconnects the other, then the disconnected one reconnects, thus disconnecting the first, which then reconnects, etc.