Chevalier and I found this yesterday. We were in Aeon chat and noticed that when we switched to the GW interface, the chat box there would not display both of our sentences, just the other's. ie. I could see his chat, I couldn't see my own. He could see my chat, but not his own. The actual Aeon chat worked fine, just the GW chat window was bugged. Here are some screenshots to illustrate this more clearly.
BTW sorry if this has already been reported