1973465 - [Firefox Dev Edition | Ubuntu 24.04]: Incorrect StartupWMClass in .desktop file of the deb package version

Status: RESOLVED DUPLICATE of bug 1960205

(Release Engineering :: General, defect, P3)

Description

[Zablon Matano [:zab]]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0

Steps to reproduce:

1. Install Firefox Developer Edition on Ubuntu 24.04. (deb package).
2. Launch Firefox Developer Edition.
3. Observe that the dock icon does not correctly associate with the running window.
4. Open and inspect running windows (Press Alt + F2, Run "lg" command, Click on "Windows" ).
5. Observe that the "wmclass" for Firefox Developer Edition is set to "firefox-dev".
6. Inspect ".desktop" file (/usr/share/applications/firefox-devedition.desktop).
7. Observe that the "StartupWMClass" has been set to "firefox-aurora".

WORKAROUND

1. Copy the "firefox-devedition.desktop" file into the "~/.local/share/applications/" folder.
2. Modify the "StartupWMClass" and set it to "firefox-dev"

Actual results:

The Firefox Developer Edition dock icon shows a generic gears icon and can't be pinned.

Expected results:

The Firefox Developer Edition dock icon should correctly associate with the running application window, showing the correct icon and functionality e.g. Green counter showing number of open windows.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Gtk' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[:gerard-majax]

This code was already there prior my changes: https://searchfox.org/mozilla-central/rev/874c5067c78f395e07a95dd0a55bc7e7f029a192/python/mozbuild/mozbuild/repackaging/desktop_file.py#272

Someone from releng would know better where lies the correct fix.