Not sure if anyone has realised yet but as a survivor if you queue up with a build the killer instantly counters it by default, seems like its a new update patch they did thats been here for a few months now.

For example, queue up with a full flasglight build - you'll get a killer with lightborne

Queue up with a locker build you'll get a killerbthat exposes you when you jump out of a locker

Queue up with a anti slugging build, you'll get a killer that camps hooks and vice versa