What's the rationale for changing the search bar autocompletion from the
title prefixes to the structured search? The non-prefix search has
caused much trouble in Wikidata for years. What kind of use cases were
considered for this part of the matter? (I know you can disable that in
the preferences.)
I'm not familiar with Wikidata's experience, can you tell me more about what you mean or point me to where I can learn more? It'll help me find out what you're looking for as far as our reasons go, after that I'll check with our interim product manager (who was not responsible for making the decision that you're referring to, so there's no direct person for me to ask about this).