System irresponsive after 2-finger horizontal scroll over dock

[Diogo]

If I do a two-finger horizontal scrolling on top of the dock/sidebar, the system becomes almost completely irresponsive: no response to keyboard, only the mouse cursor moves, but clicking anywhere has no effect. I have to close the laptop lid to force suspend, so I can control the system again.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell-extension-ubuntu-dock 67ubuntu20.04.5
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 25 23:52:51 2020
InstallationDate: Installed on 2019-07-03 (297 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
PackageArchitecture: all
SourcePackage: gnome-shell-extension-ubuntu-dock
UpgradeStatus: Upgraded to focal on 2020-04-25 (0 days ago)

[Diogo (dpc90)]

I just found out that the problem is gone if I disable IMWheel (https://wiki.archlinux.org/index.php/IMWheel).

[Sebastien Bacher (seb128)]

Thank you for your bug report, could you add your 'journalctl -b 0' log after getting the issue and specify the time where you hit the bug (to match the log entry)

[Diogo (dpc90)]

The requested log file follows attached. The steps I followed were: 1 - reboot the system, 2 - start IMWheel (open terminal and manually running the command "imwheel"), 3 - two finger scrolling over the side dock (to reproduce the bug), 4 - lock/unlock screen and restart gnome-shell ("Alt+F2 r") (to regain control of the system), 5 - dumping 'journalctl -b 0' to the attached file.