Not sure whether this is a bug, or not yet implemented, but the choices of filtering chat with showing or hiding Public/Direct/Party does not save between sessions. Currently the only option is to disable chat all together.
Personally I keep public chat disabled, but I still want to chat in party or with direct messages/whispers. Upon logging in I have to un-tick public chat every time, which gets annoying after a while.
Would be great if our chat filtering choices saves between sessions.