Hello,

In 25.x, if a message is sent with all hard newlines, Gnus adds 
"format=flowed" to "Content-Type: text/plain;" headers.  This is 
described on the wiki [1].  With an April 15th build from the 
master branch, "format=flowed" will not be added.  Was there a 
change that I missed or was this unintended?

Thanks,

Joseph

[1] https://www.emacswiki.org/emacs/GnusFormatFlowed