Update makes system unusable if screen lock turns on

[Richard Kolb]

When the update indication pops up, you click update, let the screen lock turn on. Then while the screen lock is turned on it gives you are still able to enter your password to continue with updates. If you do that, and try to unlock the screen, the lock screen is still visible along with the toolbar. At this point the system is basically unusable. Sometimes I've been able to log out or reboot the system, usually I have to do a hard reset.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-software 3.28.1-0ubuntu4.18.04.15
ProcVersionSignature: Ubuntu 4.15.0-96.97-generic 4.15.18
Uname: Linux 4.15.0-96-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon May 4 13:19:35 2020
InstallationDate: Installed on 2013-07-17 (2483 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
InstalledPlugins:
 gnome-software-plugin-flatpak N/A
 gnome-software-plugin-limba N/A
 gnome-software-plugin-snap 3.28.1-0ubuntu4.18.04.15
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-software
UpgradeStatus: Upgraded to bionic on 2020-01-18 (106 days ago)