User Search (Preview) API Broken

I know it's a preview API and all, but I figured I'd report the bug here. If there's a more appropriate place for this, let me know.

When I search for a user by any parameter (name, user id, host id, etc), I get a return that includes every user in my database. This behavior is consistent both in custom applications as well as the Sky API Console.

Anybody else seeing the same thing?