AirPods Pro High Pitched Whine
When ANC is on, if you push on either bud there's a high pitched whine (tea kettle like) that can increase/decrease with the amount of pressure and angle you use. Additionally, it reduces the battery life by about 50% after only a few minutes of playing with it.
I called Apple support and they weren't really interested in the issue and advised me to return mine at the closest Apple store. I did and sure enough these do it as well! Something about the ANC and maybe the auto adjustment sound capabilities are causing this issue? Nobody else has mentioned it but this is my second pair now.