This is concerning. My first thought is: There are technically multiple bugs being reported here. If they have different causes then that can mean it's difficult to declare the lot resolved.
My second thought is that gnome-shell hasn't yet been upgraded in focal. It's the same series as is in eoan so in theory we should be able to reproduce this by upgrading to just eoan. It seems you installed 16.04 originally, but were you coming from 18.04 this time? ** Tags added: champagne -- 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/1861991 Title: upgraded to focal yesterday, I've got no control panel, my theme is weird, and alt-tab isn't working Status in gnome-shell package in Ubuntu: New Bug description: I don't have the skills to pick apart this mess, sorry. If there's anything I can do to help debug it give me a shout. Thank you. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: gnome-shell 3.34.3-1ubuntu1 ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8 Uname: Linux 5.4.0-12-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu16 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed Feb 5 09:24:24 2020 DisplayManager: gdm3 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 2018-02-24 (710 days ago) InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47 RelatedPackageVersions: mutter-common 3.34.3-1ubuntu1 SourcePackage: gnome-shell UpgradeStatus: Upgraded to focal on 2020-02-05 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1861991/+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