bug#59065: 28.2; Mapping default face affects extended faces

[Eli Zaretskii]

> From: Al Haji-Ali <abdo.haji.ali@gmail.com>
> Date: Sun, 06 Nov 2022 01:13:23 +0000
> 
> 0. Run `emacs -Q`
> 
> 1. Create a buffer with this content and ensure `org-mode` is on
> ------------------------------------------------------------
> * One
> #+begin_src emacs-lisp
> #+end_src
> * Two
> #+begin_src emacs-lisp
> #+end_src
> ------------------------------------------------------------
> 
> 2. Call `org-narrow-to-subtree` on "One".
> 
> 3. Change the face `org-block-end-line` to have an extended background on the 
> end-line of the org-block
> 
> (set-face-attribute
>    'org-block-end-line nil
>    :extend t
>    :background "#4e5079")
> 
> 4. Create a any font remap like this trivial one
> 
> (face-remap-add-relative 'default 'default)
> 
> or even this one
> 
> (face-remap-add-relative
>         'default
>         '(:filtered (:window not-real-filter t) not-real-face)
> 
> 5. Notice how the background colour on the last line of the narrowed buffer 
> extends over the whole window instead of just the line.

Thanks, should be fixed now (on the master branch).