Some days I just don't feel like chatting.
Those who know me in BW2 and EBA may find that difficult to believe, but it does happen.

I hid chat and logged out of Facebook.
When I logged back in again, I was automatically logged back into chat.

I had to hide it again manually.

Then, when I logged out of EBA to play other games (DJArts games of course) I had chat hidden before I left.

I just came back in to accept some more crates etc, and first thing I see is chat open again.

If I wanted chat open when I logged in, I wouldn't have hidden it.