Queries with an OR operator that combines site: filters now always fail, and return no results.
For instance, this query should return a bunch of pages on both Apple’s website, and The Verge’s, but instead returns no results:
duo (site:apple.com OR site:theverge.com)
https://kagi.com/search?q=duo+%28site%3Aapple.com+OR+site%3Atheverge.com%29
This was working as of a few days ago. I very often use this to search multiple Wikipedia languages at once.
Those queries should return results, from both websites, as before.