bug#44284: 27.1; with some Unicode font, scrolling upward with the mouse wheel actually scrolls downward when the cursor needs repositioning

[Eli Zaretskii]

> Date: Fri, 30 Oct 2020 11:52:28 +0100
> From: Vincent Lefevre <vincent@vinc17.net>
> Cc: 44284@debbugs.gnu.org
> 
> On 2020-10-28 18:53:37 +0200, Eli Zaretskii wrote:
> > Please try the latest emacs-27 branch or the master, it's possible
> > that this is already fixed there.  (I couldn't verify myself if this
> > is fixed as I cannot reproduce the original problem to begin with.)
> 
> Still the same problem with the latest emacs-27 branch
> (da6234e2dfd8c345bad1ff3075033b282b64f958).
> 
> GNU Emacs 27.1.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.23, cairo 
> version 1.16.0) of 2020-10-30

Thanks.  This means that I will need a reproduction recipe with some
less Unix-specific font, because I tried a lot of different font sizes
and couldn't reproduce the problem, at least not in "emacs -Q".