New [20.5.28] Redmi Note 7 Pro - noise in sound


May 30, 2020
since the first miui 12 beta release, I have a sound problem in redmi note 7 pro a.k.a violet,
there is a noise in whatsapp voice and in call of duty mobile game sound.

p.s: you should set the volume to the top or use a handsfree so u can hear it, its very annoying.
p.s.2: no mod or magisk or anything, pure 20.5.28 weekly rom.
p.s.3: it was fine on miui 11 beta and I did try and install eu stable 11.0.8 and that noise wasn't there.

plz fix it