This is how to do it:
1- create a new empty file and open it
2- write abc
3- change its face to bold and its foreground color to blue
4- type enter to return to line
5- type M-o d to choose the default face
6- write def and type enter
You should get this:
7- but after saving the file, and reopening it, I get this:
As you can see, the second line becomes bold too. When I open the enriched text file in raw text mode, I find this:
Content-Type: text/enriched
Text-Width: 70
<bold><x-color><param>blue</param>abc
</x-color><x-bg-color><param>white</param><x-color><param>SystemWindowText</param>def
</x-color></x-bg-color></bold>
I tested this on Windows 10, but I get the same problem with Debian too. I also used the command emacs -q to ignore my .emacs file and start an out-of-the-box verion of emacs.
This is my M-x emacs-verion on Windows:
GNU Emacs 26.1 (build 1, x86_64-w64-mingw32) of 2018-05-30
