has poor alignment of the column headers for each section. I don't recall it being like this before so I'm assuming it's the result of some upgrades to the messages area.
It would also be quite nice to have a "submit/archive" button on the preview screen for private replies.
My normal routine is to compose the reply and click preview. If no changes are necessary I must either click "edit" and then "submit/archive" or click "submit" and then "mailbox" and then "remove".