Used to be able to click anywhere on the area outside the chat window and it would close. Now I need to navigate away from the current page and manually reload.
Also, if memory serves, the original theme showed the chat option more prominently on the user profile. Now I need to click on the hamburger button to see the option, which is fine, but I'm not sure that a new user would even realize the chat is even an option with the current/new UI.