Not really a bug; not really a specific feature; just want to share my experience as a bilingual person.
I am an english-speaker in a french province of canada and often search things in both languages; I find english results work well but french results are often sparse/incomplete. Worse then that, when I'm trying to find french documentation on our government website, often the search will turn up english results even when my query was in french. This really hampers my ability to use Kagi day to day.
I would expect the results to have the language I searched with or include both language's top results.