Unable to import key file in "authentication" in Software sources"

[Leó Kolbeinsson]

Running test on Lubuntu Hirsute daily ISO from QA testing tracker http://cdimage.ubuntu.com/lubuntu/daily-live/20210203/hirsute-desktop-amd64.iso

Unable to import key file in "authentication tab" - no error message received

Steps to produce the bug

1. Open Software Sources from Preferences menu
2. Go to "Authentication" tab
3. Select/Click on "+Import Key File"
4. Nothing happens and no error message is received

The file manager should have opened and browsed for the key to import

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: software-properties-qt 0.99.5
ProcVersionSignature: Ubuntu 5.8.0-36.40+21.04.1-generic 5.8.18
Uname: Linux 5.8.0-36-generic x86_64
ApportVersion: 2.20.11-0ubuntu57
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: LXQt
Date: Wed Feb 3 18:37:11 2021
InstallationDate: Installed on 2021-02-03 (0 days ago)
InstallationMedia: Lubuntu 21.04 "Hirsute Hippo" - Alpha amd64 (20210203)
PackageArchitecture: all
SourcePackage: software-properties
UpgradeStatus: No upgrade log present (probably fresh install)

[ԜаӀtеr Ⅼарсһуnѕkі (wxl)]

Were you to `lxqt-sudo software-propreties-qt` you would see that this is a duplicate of the other bug. Technically, it's got a fix. You might want to try testing it and maybe we can actually get this resolved once and for all.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.