Mistake in Alt-Tab operation

[Jerry Quinn]

I've uncovered what I think is a bug in the way that gnome-shell implements Alt-Tab support. First, my understanding is that the current version of Alt-Tab is only supposed to select between windows in the current virtual desktop.

I accidentally uncovered this as follows. I moved a Firefox window (I have many open) from virtual desktop 2 to virtual desktop 1 using C-S-A-Up. Then, when I use Alt-Tab, I see 3 firefox windows as part of the 7 choices displayed. If I click on one of the other 2 firefox windows, it takes me down to virtual desktop 2.

The window list for Alt-Tab in virtual desktop 2 doesn't include the firefox window in virtual desktop 1, so immediately doing Alt-Tab after the mistake doesn't reverse things.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell 3.36.4-1ubuntu1~20.04.2
Uname: Linux 5.8.18-050818-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sun Dec 27 11:33:34 2020
DisplayManager: gdm3
InstallationDate: Installed on 2020-05-29 (211 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: mutter-common 3.36.6-1ubuntu0.20.04.2
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to focal on 2020-11-04 (53 days ago)