> > Or wait for Emacs 28.
> 
> Well, good that "they" fixed it but please tell me what
> version number Emacs 28 will start on since mine
> 
>   GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, cairo
>   version 1.16.0) of 2021-08-27
> 
> is somewhere in (27, 28) limbo.

Someone else will have to tell you that.  My
Emacs 28 is the latest - and only - MS Windows
binary posted by GNU Emacs, and it dates from
2021-01-15:

https://alpha.gnu.org/gnu/emacs/pretest/windows/emacs-28/

So ... older than yours by almost 8 months.