Subject: Broken follow-mode
From: Juri Linkov <[email-masked]>
To: [email-masked]
Date: Mon, 25 Aug 2025 09:30:10 +0300
List-Id: <debbugs-submit.debbugs.gnu.org>

Some recent change in master broke display for follow-mode:

0. emacs -Q
1. visit a file in fundamental-mode, e.g.
   C-x C-f etc/COPYING RET
2. split horizontally
   C-x 3
3. M-x follow-mode RET
4. scroll down a few screens
5. type 'M-<' (beginning-of-buffer)

It displays the message "Back to top level",
but doesn't move to the beginning of the buffer.

Typing 'C-l' updates the screen, and reveals
that 'M-<' actually moved to the beginning of the buffer,
but didn't update the screen.