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Firefox 159.0.1 (Mozilla .deb) now uses ~/.mozilla instead of ~/.config/mozilla – only me?

I-Firefox Profiles
mrpg replied 5 imizuzu edlule
mrpg
mrpg

I am using Firefox (.deb from mozilla, not snap) in ubuntu budgie 26.04. It used ~/.config/mozilla/firefox as its profile root but after I updated to 159.0.1~build1 and clicked on a link in Thunderbird it began to use ~/.mozilla. I closed firefox, renamed that .mozilla directory, and it recreated it. MOZ_LEGACY_HOME is not set, and XDG_CONFIG_HOME is unset.

Is it only me? Thanks for your time.

$ aptitude show firefox Paquete: firefox Versión: 159.0.1~build1 Desarrollador: Mozilla <release@mozilla.com>

$ aptitude show thunderbird Paquete: thunderbird Versión: 2:1snap1-0ubuntu5

~$ stat .mozilla/ 

File: .mozilla/
Birth: 2026-11-04 14:43:08.656418113 -0300

~$ stat .config/mozilla 

File: .config/mozilla
Birth: 2026-05-01 00:15:51.579973605 -0400

about:support: Firefox 159.0.1 (build 20261102144711), distributionID mozilla-deb, Linux 7.0.0-42-generic, Wayland (MOZ_ENABLE_WAYLAND=1). The crash reporter’s data and ping directories point to ~/.mozilla/firefox, even though the profile is in ~/.config/mozilla/firefox.

I am using Firefox (.deb from mozilla, not snap) in ubuntu budgie 26.04. It used ~/.config/mozilla/firefox as its profile root but after I updated to 159.0.1~build1 and clicked on a link in Thunderbird it began to use ~/.mozilla. I closed firefox, renamed that .mozilla directory, and it recreated it. MOZ_LEGACY_HOME is not set, and XDG_CONFIG_HOME is unset. Is it only me? Thanks for your time. $ aptitude show firefox Paquete: firefox Versión: 159.0.1~build1 Desarrollador: Mozilla <release@mozilla.com> $ aptitude show thunderbird Paquete: thunderbird Versión: 2:1snap1-0ubuntu5 ~$ stat .mozilla/ File: .mozilla/ Birth: 2026-11-04 14:43:08.656418113 -0300 ~$ stat .config/mozilla File: .config/mozilla Birth: 2026-05-01 00:15:51.579973605 -0400 about:support: Firefox 159.0.1 (build 20261102144711), distributionID mozilla-deb, Linux 7.0.0-42-generic, Wayland (MOZ_ENABLE_WAYLAND=1). The crash reporter’s data and ping directories point to ~/.mozilla/firefox, even though the profile is in ~/.config/mozilla/firefox.

All Replies (4)

jbr
jbr
  • Abanegalelo Abayi-10 Abaphambili

(My mozilla-deb 159.0.1 still points to ~/.config/mozilla/firefox however I don't run Thunderbird in that VM so I can't check for any interactions…)

If you (apt) install, say, firefox-nightly that will set up a new profile, where that one ends up? (from about:support and about:profiles, not just the profile path, but also cache, update, crash and similar directories?)

mrpg
mrpg Umnikazi wombuzo

Thanks:

firefox-nightly
162.0a1~20261108091345

about:profiles

Profile: default-nightly This is the profile in use and it cannot be deleted. Default Profile yes Root Directory /home/m/.mozilla/firefox/kxzeul1f.default-nightlyOpen Directory Local Directory /home/m/.cache/mozilla/firefox/kxzeul1f.default-nightlyOpen Directory

about:support Profile directory /home/m/.mozilla/firefox/kxzeul1f.default-nightly /home/m/.mozilla/firefox/Crash Reports /home/m/.mozilla/firefox/Pending Pings /home/m/.cache/mozilla/firefox/kxzeul1f.default-nightly/startupCache/startupCache.8.little

mrpg
mrpg Umnikazi wombuzo

I tried firefox and nightly in a new VM, both used .config, they didn't create /.mozilla so I think I should blame TB.

mrpg
mrpg Umnikazi wombuzo

I found out what happened. It is because I had a file called mozilla, that triggered the creation of /.mozilla

Buza umbuzo

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