1888968 - date input is always displayed with the "en-US" localisation despite settings asking "fr"

Status: UNCONFIRMED

(Core :: Internationalization, defect)

Description

[clement.escolano]

Attachment: Capture d’écran 2024-04-01 à 22.06.48.png

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:124.0) Gecko/20100101 Firefox/124.0

Steps to reproduce:

Firefox is configured in French, to use OS settings for date formatting, OS is configured in French. I display an input tag of type date, for instance here: https://developer.mozilla.org/fr/docs/Web/HTML/Element/input/date

Actual results:

The date picker is localised with en-US (start on Sunday, month is in English, date is in format MM/DD/YYYY)

Expected results:

The date picker should be localised with fr (start on Monday, month in French, date format DD/MM/YYYY)

Comment 1

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

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

Comment 2

[Raluca Popovici, Desktop QA]

Attachment: Screenshot 2024-04-03 at 11.13.27.png

Comment 3

[Raluca Popovici, Desktop QA]

Hello, thank you for the bug report!
Unfortunately I could not reproduce your issue(please see the attachment) on macOS 13.2.1 using Fx 124.0 fr build. Would you be so kind as to answer a few questions so we can investigate this further?

Does this issue happen with a new profile(fr build)? Here is a link on how to create one: https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles
Does this issue happen with latest nightly(fr build)? Here is a link from where you can download it: https://www.mozilla.org/en-US/firefox/channel/desktop/
Does this issue happen when Firefox is in Troubleshoot Mode(fr build)? Here’s a link on how to enable it: https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-firefox-in-troubleshoot-mode

Comment 4

[clement.escolano]

Hello. Indeed, in a new profile and on nightly it works fine.
My current profile with troubleshoot mode still shows the issue though.

Comment 5

[Jared Hirsch [:jhirsch] (he/him) (Needinfo please)]

This seems like an issue with internationalization / localization.