Dock appears on top of windows in overview on a second monitor

[Amr Ibrahim]

Steps to reproduce the issue:

1. Attach a second monitor
2. Show the Dock on all monitors from Settings
3. Open many windows in the second monitor
4. Press the Super key for overview

See the attached screenshot.

What happens:
Dock appears on top of windows in overview on a second monitor.

What should happen instead:
Dock should not appear on top of windows in overview on a second monitor.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell-extension-ubuntu-dock 68ubuntu1~20.04.1
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Jul 27 15:49:50 2020
InstallationDate: Installed on 2020-04-26 (92 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-shell-extension-ubuntu-dock
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

Can you confirm the problem is caused by 'Ubuntu Dock'? Try disabling it in the Extensions app.

[Amr Ibrahim (amribrahim1987)]

When I disable the Ubuntu Dock, the upstream Dash appears only in the primary monitor in overview (I guess that's what upstream wants), so the issue does not exist in this case.

[Sebastien Bacher (seb128)]

The issue seems similar to what is being discussed upstream on https://github.com/micheleg/dash-to-dock/issues/410

[Daniel van Vugt (vanvugt)]

That's an old bug that's about the workspace previews creeping onto the desktop. It was fixed upstream in https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/517 and is not relevant here.