Note

• When the user goes to browser preferences/General/Language and Appearance/Language, then searches for new languages and adds "Romana" as first language, he will notice that the new language is only partially set, and the previous one remains set in about:preferences.

Found in

• Beta v111.0b3

Affected versions

• Beta v111.0b3

Tested platforms

• Affected platforms: Windows 10, Ubuntu 22, Mac OS 11
• Unaffected platforms: -

Steps to reproduce

1. Launch beta v111.0b3
2. Go to browser preferences/General/Language and Appearance/Language
3. search for new languages and add "Romana" as your first language
4. Click OK on the modal, as to select the "Romana" language as a priority.

Expected result

• The language is instantly applied to all areas of the browser.

Actual result

• The language is NOT applied in about:preferences, about:addons

Regression range

• unknown; cannot test in Nightly since it does not have the language change feature in the preferences.
• This issue does not occur in Beta v110.0b3.

Additional notes

• This issue is also observed for other languages, but not all, only some.
• This issue is disabled in Nightly (cannot be reproduced) and it DOES NOT reproduce in Release v110.0.
• I don't know how to determine if this is a firefox issue or a language pack issue.

Romanian is missing a couple of FTL files (which I just added), but I wouldn't expect them to cause the whole of preferences to fall back to English.

• browser/browser/components/mozSupportLink.ftl
• browser/browser/firefoxRelay.ftl

I would expect the next beta build to fix this, if this is caused by one of these two files, still not sure why it's happening.

Bug 1801927 (mozSupportLink) is 111, which makes it the most likely of the two.

Updated to Firefox 111.0b4, which also updated the langpack to 111.0buildid20230219.190218, and preferences are localized (as far as they can be for a locale not at 100%).