Of course "Workspaces span displays" fixes it as everything moves at once. Putting the external screen on the left or right also fixes it. But that just shows how the animation is broken. When the screen is on top and doesn't span displays there's no reason for the contents of the internal screen that are switching virtual desktop to fly through the external screen. That's just a bug.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1774498 Title: Windows flash by external screen on workspace change Status in gnome-shell package in Ubuntu: Incomplete Bug description: gnome-shell has the very interesting default of only doing virtual desktops on the internal screen. This works fine but has a strange visual glitch when changing virtual desktops where the contents of the internal screen flash through the external one. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-shell 3.28.1-0ubuntu2 ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17 Uname: Linux 4.15.0-22-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Thu May 31 21:06:47 2018 DisplayManager: gdm3 InstallationDate: Installed on 2018-05-31 (0 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) SourcePackage: gnome-shell UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1774498/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
