Authentication Window Stays Open

[Mark Smith]

I left the Beta of Focal Fossa running overnight and when I logged in this morning, I found an open Authentication window with the message "To change software repository settings, you need to authenticate" (see attached screenshot).

I enter my password and the password field grey out.

The window stays persistent but is "invisible" to the mouse - i.e. if I click anywhere in it, it actually clicks the thing behind it.
The Cancel button does nothing.

I had this same issue yesterday when actually running Software & Updates.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: software-properties-gtk 0.98.7
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu22
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 4 09:55:33 2020
InstallationDate: Installed on 2020-01-24 (70 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: software-properties
UpgradeStatus: Upgraded to focal on 2020-04-03 (0 days ago)

[Mark Smith (juglugs1974)]

I attempted to make a change to a repository by launching Software & Updates and editing an unselected package from eoan to fossa - the authentication window persisted at the top left of my screen throughout - even after entering my credentials in the central authentication window that popped up (and went as normal)

[Sebastien Bacher (seb128)]

Thank you for your bug report. Do you know why the prompt triggering, did you actually change sources?
Could you add your journalctl log from the session which has the issue?
Do you have specific steps to trigger the bug?

[Mark Smith (juglugs1974)]

Not at that time - I had just gone to bed. I had changed them earlier that day, and the error triggered. So I rebooted. This time the error came about without me touching it.
Journal output attached.
The bug doesn't appear to be triggered by any steps in Software-Updater

[Mark Smith (juglugs1974)]

Sorry, I should add that the pop-up window remained on top of all the others, so it wasn't hidden behind anything else before I went to bed.
And although it was at the top, when I entered my password and the field went grey, the window remained visible, but if I clicked anywhere in the window, I actually clicked whatever was behind it.

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1824874, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.