Clicking on Total War: Attila does not bring up the window

[Vadim Peretokin]

Clicking on Total War: Attila does not bring up the window; instead it opens the window selection menu - and when you move your mouse over the window icon, it goes into drag mode. See attached screencast for a demonstration.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-shell-extension-ubuntu-dock 0.9.1
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
NonfreeKernelModules: vtsspp sep4_1 socperf2_0 pax nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon May 21 07:20:00 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2012-03-23 (2249 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
PackageArchitecture: all
SourcePackage: gnome-shell-extension-ubuntu-dock
UpgradeStatus: Upgraded to bionic on 2018-05-13 (7 days ago)