I have my view pane off, and open the email in the same window when viewing and email.
When viewing an email, the header is scrolling along with the email text, so when I want to close the email, I have to scroll back up to the top to get to the header with the close button. It was not doing this previously, but I'm not sure when it changed. Is there a setting that will "pin" or "lock" the header at the top, so that scrolling will only scroll the text of the email?