bug#63764: 30.0.50; pixel-scroll-precision-mode starts skipping pages after selecting region

[Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Patrick Poitras <patrick.f.poitras@gmail.com> writes:

> I can confirm that it's also present on the emacs-29 branch, with PGTK on X11. 
>
> Patrick
>
> On Sun, May 28, 2023 at 11:26 AM Eli Zaretskii <eliz@gnu.org> wrote:
>
>  > From: Patrick Poitras <patrick.f.poitras@gmail.com>
>  > Date: Sun, 28 May 2023 10:52:13 -0700
>  > Cc: 63764@debbugs.gnu.org
>  > 
>  > Given it's 100% reproducible on my build, I went ahead with some testing of configuration options. 
>  > 
>  > It seems related to PGTK. ./configure --with-pgtk has the bug whereas the version without it does not.
>  > Given the warning message about using PGTK with X11, I assume that this falls under the same
>  > umbrella, and that I should go complain to the package builders.
>
>  Thanks.  It'd be important to know whether this problem also exists on
>  the emacs-29 branch (I'd guess it does), in which case its urgency
>  will go up significantly.  Can someone please try this in a PGTK build
>  of the emacs-29 branch, and report back?  TIA.

I've said this many times: we don't support using the PGTK build on X
Windows, due to the frankly abysmal quality of GDK's X11 backend.
Unless this also happens on Wayland or Broadway, I will close this bug.

Try a regular X configuration instead.