Reproduced 7/10 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression.
Actual Result: You will sometimes hear a popping noise
Expected Result: The swift frequency change produces a smooth and clean audio.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-172399 in the post.