The new auto-archiving mail feature isn't working correctly: when you view multiple messages in a row, using the arrows on top to move between messages, only the first viewed message is sent to the archive automatically.
I also have a complaint about this new feature. I don't like it that read messages are archived immediately. I'm running a business via mail: people send furniture and currants via mail, I upgrade their furniture and send it back to them. With this new feature I have to friend everyone who buys from me in order to return their upgraded furniture. I prefer to only friend people I've actually met in-game.
ETA: I would prefer a manual archiving option or that messages are only archived upon logout.