Licensee is using the Sense Hearing of the AIPerceptionSystem. When using the GamePlay Debugger they notice that one call of MakeNoise out of every two seems ignored by the AIPerception.
Results: AI picks up the Noise when MakeNoise is called twice
Expected: AI picks up the Noise when MakeNoise is called once
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-59087 in the post.