Hey @WolfiiDev -- thanks for posting. We actually noticed this internally yesterday, but if only we'd known you figured this out yesterday as well, that would've helped.
That said, the latest version of NodeBB should resolve this.
We've set up a Category for a specific group of people that aren't related to the rest of the users using our forum. We'd like for them to see/search for users only in their Category's group. Is there a way to allow for a user in a group to only be able to search for people within their own group?