I am aware of this, as mentioned above. I agree we need someone on non-X11 PGTK to test this, otherwise this just falls outside of scope. My previous post was simply to confirm that the problem on X11 + PGTK is also present on emacs-29, which isn't surprising considering pixel-scroll.el has barely changed since then.

Cheers,

Patrick

On Sun, May 28, 2023 at 5:43 PM Po Lu <luangruo@yahoo.com> wrote:

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.