bug#47498: 28.0.50; follow-mode misses a line with tiling window manager

[martin rudalics]

> 0. emacs -Q
> 1. C-h i
> 2. C-x 2

Why C-x 2?  The whole idea of `follow-mode' is based on C-x 3.  Or am I
missing something?

> 3. M-x follow-mode RET
>
> There is now one line missing from the display.  When using
> `display-line-numbers-mode', this effect is more obvious.

Which line?  Can you post a screenshot?

martin