When I got on when the chat message system got changed to the Hero Chat system I was in local chat and had no idea how to talk to anyone since I had no information telling me how to chat globally.
To fix this, I suggest to change the local chat message when no one hears you from - "No one hears you." to - "No one hear s you. Type /ch g to chat globally."
I know this is a small change, but it can help a lot of guests who don't understand why they can't talk to anyone.