ShengHuo ZHU <zsh@cs.rochester.edu> writes:
> It seems fine for me. "From: \n" is inserted if not exist, but it
> seems the NL is invisible in your article buffer. I am not sure
> why. Could you debug it? The code is in gnus-display-x-face-in-from.

article-hide-boring-headers in gnus-art.el is (correctly) determining
that gnus-display-x-face-in-from's faked "From" line is empty, so it
is trying to remove it from visibility.  I don't know why it doesn't
get rid of the entire line; I didn't chase the problem that far.  The
patch below is a somewhat tacky but adequate fix to the problem.