k4dirstat overriding default file manager in Firefox

[Lonnie Lee Best]

In Kubuntu 20.04, if I install k4dirstat, Firefox chooses k4dirstat as the default file manager when I attempt to "Open Containing Folder" for a downloaded file. Here's a screenshot of where I'm clicking in Firefox that launches k4dirstat:

https://i.imgur.com/xR6T5ap.png

If I uninstall k4dirstat, Firefox will instead open my file manager at the correct location (where the file was downloaded to, instead of launching k4dirstat).

How can I have both k4dirstat and a Firefox that acts right when I click "Open Containing Folder"?

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: k4dirstat 3.2.0-1build1
ProcVersionSignature: Ubuntu 5.4.0-62.70-generic 5.4.78
Uname: Linux 5.4.0-62-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
Date: Mon Jan 18 04:39:48 2021
InstallationDate: Installed on 2020-04-26 (267 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: k4dirstat
UpgradeStatus: No upgrade log present (probably fresh install)

[Jerome Robert (jeromerobert)]

k4dirstat declare it self has being able to open folders (this is in usr/share/applications/k4dirstat.desktop).

There is no way to specify a MIME priority in a .desktop file. Users are expected to configure this priority them self. To do so edit/create $HOME/.config/mimeapps.list (user specific) or /etc/xdg/mimeapps.list (system wide) and add:

[Default Applications]
inode/directory=thunar.desktop <-- enter your prefered file manager here

xfce4-mime-settings provide a GUI for that. I guess that KDE and Gnome have similar tools.

[Jerome Robert (jeromerobert)]

Fixed in k4dirstat 3.4.2

[Launchpad Janitor (janitor)]

This bug was fixed in the package k4dirstat - 3.4.2-1

---------------
k4dirstat (3.4.2-1) unstable; urgency=medium

  * New upstream version 3.4.2
    - Fix a floating point exception with go-mtpfs
    - Remove inode/directory MIME type (LP: #1970925, LP: #1912190)
  * Bump Standards-Version

 -- Jérôme Robert <email address hidden> Sun, 14 Aug 2022 14:56:04 +0200