martin rudalics <rudalics@gmx.at> writes:

>  > 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?

Sorry, yes, that step should indeed be `C-x 3'.

>  > 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?

Please see the attached.