The MediaWiki REST API docs for /search/page and search/title endpoints are missing the anchor property,
Compare:
- https://en.wikipedia.org/w/rest.php/v1/search/page?q=jupiter&limit=1
- SearchResults schema (fixed in https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1271069)
However, this does not cause any of the OpenAPI validation tests to fail. Undocumented properties are a common cause of out-of-date documentation, so it would be great if the tests could catch this. One thing to try could be setting additionalProperties to false in the schema.