Opening a combo box will draw windows from other workspaces on current workspace

[David Klasinc]

When a combo box is selected all the currently open windows will be drawn on the screen, even if those windows are on other workspaces.

How to reproduce:

- Open different windows: Files and Terminal
- Send one window to a different Workspace: right-click on the title bar, Move to Workspace Down/Up
- Open Settings | Appearance
- Open 'Position On Screen' combo box

- Windows that were sent to other the worspaces will appear on the screen. Windows aren't active and you're not able to interact with them, they are just displayed.

Some windows will have a title bar that can be interacted with. In my example, it was Brave browser, I was able to click on minimize/maxime/close buttons and move the window around, but window content wasn't responsive. However, Terminal, Files, Settings were completely unresponsive.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell 3.36.0-2ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu21
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 30 23:03:34 2020
DisplayManager: gdm3
InstallationDate: Installed on 2020-03-30 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200329)
RelatedPackageVersions: mutter-common 3.36.0-2ubuntu1
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

Sounds like one of the issues fixed in:

https://launchpad.net/ubuntu/+source/gnome-shell/3.36.0-2ubuntu2