[Bug 253382] Elantech touchpad stopped recognizing taps with 12.2-p3 upgrade

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253382

            Bug ID: 253382
           Summary: Elantech touchpad stopped recognizing taps with
                    12.2-p3 upgrade
           Product: Base System
           Version: 12.2-RELEASE
          Hardware: Any
               URL: https://wayland.freedesktop.org/libinput/doc/1.16.4/to
                    uchpad-jumping-cursors.html
                OS: Any
            Status: New
          Keywords: regression
          Severity: Affects Some People
          Priority: ---
         Component: misc
          Assignee: bugs at FreeBSD.org
          Reporter: pauamma at gundo.com

Created attachment 222302
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=222302&action=edit
Xorg log

Since upgrading from 12.1-p10 (I think it was -p10 anyway) to 12.2-p3 and pkg
upgrade -f, tapping the touchpad on my laptop stopped being recognized. (But
moving the pointer by sliding a fingertip on the touchpad still works.) In
Xorg.log I see messages like: "[  1619.693] (EE) event5  - ETPS/2 Elantech
Touchpad: kernel bug: Touch jump detected and discarded. See
https://wayland.freedesktop.org/libinput/doc/1.16.4/touchpad-jumping-cursors.html
for details". I'm unsure whether this is a FreeBSD bug or a Xorg bug.

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