It only happens to me if I time out, idling too long. If I log out normally this doesn't happen unless it's new.

While I'm here, if I create a room will it only be visible for people entering after me and not for people already in chat?

Is it possible to have a bigger scroll buffer? A short BRB and you are lost because you cannot scroll back and there is no "log" option.

Also, I see again people with no posts are joining chat.