Chat window problem
 

Just before LU16, I had the habit to close my chat window in order to get a bit more gameview space, and I would bring back by hitting Enter or "/". But now when I log on my chat window is completely hidden, and will not display any chat entries (such as motd, channel chat, event chat...) until I make it up (so I lose some line entries which is a problem). I tried to reset this windows default but when I do that it just go in hidden mode (or I would say opacity 0%).
Is it now the default feature of the default UI chat window?