Just wanted to share a little issue with the chat in popup mode, which can be rather confusing.
Messages tend to show up seemingly random in either the chat window still on the page or the one that's popped out, regardless of which one is currently the active window.
I tried avoiding having the index page open while also having the chat popped out. When I went back to the index page I noticed even though the page was not open I still didn't receive most of the messages in the popup, so it's not only an issue when having two chats open. The update button doesn't do anything, refreshing the popup does help, though.