@Sebastien, this is what I found: "Problem solved in LibreOffice 6.4.4.2." ( https://bugzilla.opensuse.org/show_bug.cgi?id=1156804 )
There is a bit more related information here, saying that it only affects LO on X11 and NOT on: https://forums.opensuse.org/showthread.php/538184-LibreOffice-scroll- with-touchpad-moves-jerky ** Bug watch added: bugzilla.opensuse.org/ #1156804 https://bugzilla.opensuse.org/show_bug.cgi?id=1156804 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to libreoffice in Ubuntu. https://bugs.launchpad.net/bugs/1888505 Title: Two-finger touchpad zoom extremely sensitive Status in libreoffice package in Ubuntu: New Bug description: Open Calc -> <Ctrl> + <two finger scroll up/down> Expected behaviour: document viewpan zooms/unzooms at a reasonable speed Observed behaviour: document viewpan zooms/unzooms from maximum zoom in to maximum zoom out in maybe 10-15% of the height of the touchpad, i.e. it is unusably oversensitive. Also affects Draw and Writer, 100% reproducible. Other apps (Firefox, Eye of Gnome/Image viewer) behave as expected (very usable zoom/unzoom sensitivity). ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: libreoffice-core 1:6.0.7-0ubuntu0.18.04.10 ProcVersionSignature: Ubuntu 5.3.0-51.44~18.04.2-generic 5.3.18 Uname: Linux 5.3.0-51-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.15 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed Jul 22 14:43:20 2020 DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-xenial-amd64-20160624-2 InstallationDate: Installed on 2018-05-10 (804 days ago) InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: libreoffice UpgradeStatus: Upgraded to bionic on 2020-03-04 (140 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1888505/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp