The entity stubs in the wbUsedEntities JS config var provided by EntityView must provide labels etc in the correct language for the current user.

Once Iacd00a3aa3d48b5 caches the used entities with labels in all languages in the parser cache, we need to filter these labels again before populating wbUsedEntities in the output page, to avoid sending many MB of useless data embedded in the HTML.

Version: unspecified
Severity: major
Whiteboard: u=dev c=backend p=0