I was unable to reproduce a crash following your steps on Xorg. I tried 15 applications launched across 15 workspaces and gnome-shell could be restarted without issues.
-- 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/1799787 Title: gnome-shell crashes when forcing a restart if applications are started on multiple workspaces Status in gnome-shell package in Ubuntu: New Bug description: What should happen: With any number of applications running or workspaces enabled, gnome- shell should restart gracefully by using 'Alt F2 > r and enter'. What does happen: With just one workspace enabled, several applications can be started and gnome-shell can be restarted with 'Alt F2 > r and enter' without issue. With multiple workspaces enabled, several applications can be started and gnome-shell can be restarted with 'Alt F2 > r and enter' provided all applications are started on the first workspace. With multiple workspaces enabled, if several applications are started on different workspaces then gnome-shell will crash if restarted with 'Alt F2 > r and enter'. My last application was started on workspace 4. ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: gnome-shell 3.30.1-2ubuntu1 ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12 Uname: Linux 4.18.0-10-generic x86_64 ApportVersion: 2.20.10-0ubuntu13 Architecture: amd64 CurrentDesktop: GNOME Date: Wed Oct 24 21:01:13 2018 DisplayManager: gdm3 InstallationDate: Installed on 2018-10-02 (22 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Beta amd64 (20181002) 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/1799787/+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