The issue seems to be even worse in Ubuntu 20.04 LTS. A two-finger horizontal scroll on the dock will make the system (almost) irresponsive: no response to keyboard, only the mouse cursor moves, but clicking anywhere has no effect. Icons on the dock do not disappear anymore, though. I have to close the laptop lid to force suspend so I can control the system again.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell-extension-ubuntu-dock in Ubuntu. https://bugs.launchpad.net/bugs/1717486 Title: icons missing after 2 fingers/horizontal scrolling on the dock Status in gnome-shell-extension-ubuntu-dock package in Ubuntu: Confirmed Bug description: since the upgrade of gnome-session from 3.25.90 to 3.26.0 I observe weird visual phenomena. 1. Icons in the task bar disappear (and only appear after logout/login) 2. Windows get drawn with black margins and sometimes with black canvas (gets away after a second or so) Issue can be related to upgrade of libmutter (libmutter-1-0:amd64 3.25.91+20170902~ce515c5-1ubuntu1 -> 3.26.0-1) ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-session (not installed) ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1 Uname: Linux 4.13.0-11-generic x86_64 ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Fri Sep 15 12:33:43 2017 InstallationDate: Installed on 2017-09-05 (9 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170902) SourcePackage: gnome-session UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-ubuntu-dock/+bug/1717486/+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