Searching for translated title not working on local instance

AI-generated summary

Honeyxilia reports an issue on their self-hosted Discourse instance where searching for articles by translated titles is not working, despite the feature being available on Discourse Meta. The forum uses manual translations between French (default) and German. While users can search for topics using the original English title on Meta, attempts to search using the German translation on their local instance return no results. Honeyxilia asks if there is a specific setting or feature that needs to be enabled to allow searching by translated titles without using automated translation.

Hello, we’re hosting a Discourse ( https://forum.commown.coop/ ) instance with manually translated articles between French and German, with French as the default language and German as the supplementary language.

One of the features, which seems to be available on this instance of Discourse, is being able to search an article from the translated title, such as the following exemple underneath, looking up the "Install:

(the original article for reference)

However, on our instance, we cannot replicate the same behavior for translated titled.
For instance, after accessing our forum with German set as the language, and trying to look up this translated article, we cannot search it using the translated title.

(The original article for reference)

Is there some feature we need to tick in order to be able to look up articles in their translated languages (without activating automated translations) ?
Thanks in advance !