bug#35246: 26.2; Mouse wheel scrolling in GTK build sometimes scrolls the entire buffer

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Stefan Kangas

Sep 2, 2020, 5:33:09 PM9/2/20
to Alex Gramiak, Eli Zaretskii, 35...@debbugs.gnu.org
Alex Gramiak <agra...@gmail.com> writes:

> I just got another issue, and this time:
> 1) Busy cursor briefly appeared after several seconds of a
> non-responsive Emacs.
> 2) Scrolling occurred right after with a seemingly normal scrolling
> distance.

Here's an idea:

Do you see this only if you scroll while Emacs is busy? Or do you see
this even without that precondition?

FWIW, I can reproduce the jumping action here with the following steps:

1. <go to the beginning some long buffer>
2. M-! sleep 2 RET
3. <scroll on the mouse wheel a lot>

Also, do you have `pixel-scroll-mode' enabled?

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