Like yours, mine already has a personality since day 1, back then the input audio was never received from the jack, and the audio would always crack on the second trial. It was clover phase, I was noob, tried everything kext location, CodecCom,...etc. Didn't work, then the fan one day got stuck on its own. That was my first replacement this year.
Got a new one, worked perfectly except audio input even when migrating to OC. Recently, I learned how to change layout ID and ppl also got their prob fixed through this, fixed everything.
And just a few days ago, I realized that audio input is only accepted at certain rotation - tested on Windows and MacOS, meaning you gotta plug it at the sweet spot. Asked for an RMA, sending mine tomorrow, should arrive tuesday.
Thanks for coming to my TED talk.