I've noticed today, that I seem to be having a problem where the backlog in the chat window gets flushed. Twice I've run Syrcus Tower, and tried to go back into the backlog to check on things I've missed, and the backlog doesn't even go back to the beginning of the instance. I've asked in my FC, and I don't seem to be the only one having this problem, either.
I'm on Ultros.