If you go to a page like this the description of the project is shown in English (it actually loads localized and then gets replaced with the English version). This should not be the case; if a localized description is available for the translation project, that should be displayed.
Description
Description
Details
Details
Event Timeline
Comment Actions
Change 328034 had a related patch set uploaded (by Nikerabbit):
ApiQueryMessageGroups: pass context to get descriptions in user language
Comment Actions
Change 328034 merged by jenkins-bot:
ApiQueryMessageGroups: pass context to get descriptions in user language