Hi, Found in the log on my Debian Sid system: juil. 07 18:28:13 kos-moceratops gnome-shell[4333]: libinput error: event12 - DELL0926:00 044E:1220 Touchpad: kernel bug: Touch jump detected and discarded. juil. 07 18:28:13 kos-moceratops gnome-shell[4333]: See https://wayland.freedesktop.org/libinput/doc/1.21.0/touchpad-jumping-cursors.html for details
It seems to me a Website issue. Thanks, Patrice