2015804 - Once the user manually selects a language, the auto-detect is no longer triggered

Status: RESOLVED INVALID

(Firefox :: Translations, defect)

Description

[Ciprian Georgiu, Desktop QA]

Found in

• latest Nightly 149.0a1

Affected versions

• latest Nightly 149.0a1

Tested platforms

• Affected platforms: Win 11, macOS 26 and Ubuntu 24.04

Steps to reproduce

1. Navigate to about:translations.
2. Select a language different than English from the "Detect language" drop-down menu, e.g. Romanian
3. Paste an English text in the translation box, e.g. "General elections were held in Thailand on 8 February 2026 in order to determine the composition of the House of Representatives"

Expected result

• The language is switched to English in the drop-down menu.

Actual result

• The language is detected as Romanian in the drop-down menu, even though the text is in English.

Regression range

• Not a regression.

Additional notes

• Since the user explicitly selects a specific language from the drop-down menu before pasting the text, this might be the correct behavior.

Comment 1

[Erik Nordin [:nordzilla]]

Since the user explicitly selects a specific language from the drop-down menu before pasting the text, this might be the correct behavior.

That is correct, we only run the language detection when the "Detect language" option is selected in the dropdown. If the user has explicitly selected a language, we trust their input on that.

I could definitely see it being a future improvement to add a suggestion if we strongly think the language does not match the selection, but that is out of scope for the initial release.