If you enter this index page, you can see the four beta games, and you don't need a login to see the them, so you can see these beta games even if you're a guest.
So if you're opening any of these beta games in the observer mode as a guest, why do you also see the players chat window even if you're not logged in?
And why can you as a guest, also write something in that chat window that pops up? (It was me who tried to write something there before in the beta test 2 - guest). I wonder why seeing the chat window if you're a guest?
One suggestion is to remove the chat windows completely from the beta games tests, and another suggestion that might be an even better suggestion is to move the game observations of the beta games to the first page you come to when you have logged in. If the observer/guest wants to know more about these game then they can get a login. And when they have a login there's no problem for them to write down feed back or report bugs based of what they've seen as an observer in the forum. I mean if you're a guest then you're a guest and should be able to do anything but observ, or?
But that was just a thought...