Steps to reproduce: Search for "wikidata arrayobject".
Expected behavior: I expected T92487 to be found. The word "arrayobject" is in a comment and can be found, but "wikidata" is a project tag and is not in the fulltext search index. Yes, I'm aware of the project tag filter on the search page, but this is not accessible from the top-right search box. Also in my use-case I don't care much where the word "wikidata" is mentioned. It should be found wherever it is, not only in the project tags.
Proposal: Please add the project tags to the fulltext search index.