bug#45617: <query-replace> loses the edit region. Works in 23.3, broke in 26.3

[Eli Zaretskii]

> From: "Bob Floyd" <bobfloyd@comcast.net>
> Cc: <45617@debbugs.gnu.org>
> Date: Sun, 3 Jan 2021 11:18:03 -0800
> 
> I already had the NEWS.24 changes in my .emacs file! So that is not the cause 
> of this issue.

That is strange, because if I make all the changes mentioned in
NEWS.24, in "emacs -Q", then your recipe works for me as you expected.

Did you try that in "emacs -Q"?  If not, please try; if "emacs -Q"
with the changes from NEWS.24 does work, then there's some other
customization in your init files which gets in the way.

> You do agree this is a bug - that <query-replace> fails, correct?

It is not a bug, it is a consequence of the changes in how selections
work in Emacs.  Your example assumes the old handling of selections,
so it doesn't work with Emacs >= 24 defaults.