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John Mueller

@RBW@seocommunity.social The title-links are now generated on a per-URL basis and only differ by desktop/mobile (due to space), so probably what you're seeing is either slight differences in the status of various datacenters (rare, imo), or slightly different URLs appearing in search (more common).

developers.google.com/search/d has a lot more on titles, fwiw.

Google DevelopersInfluencing Title Links in Google Search | Google Search Central  |  Documentation  |  Google DevelopersLearn how you can write an SEO-rich titles for your website pages and Google Search by following these best practices.