Yeah, I think that’s the key piece of information that makes my previous questions irrelevant. I was thinking that this might’ve been headed into one of those “phantom” buzz/hum/ring situations with an improperly wired chime and/or mis-wired or absent Chime Controller. This is why it’s good to ask, I guess, and you answered a question that I didn’t even ask! 
That is weird! I don’t know why it’s doing that. What did Support say when you contacted them?
2025-06-19T19:03:07Z Edit: The only other situation coming to mind for me where cameras make funky sounds is this:
In that discussion, it seems to be an issue with an Alexa/Echo connection causing unexpected/unwanted sounds from a Video Doorbell Pro and Duo Cam Doorbell. I’m not sure if that’s relevant to your situation. Do you use Alexa and have the Video Doorbell v2 connected to that?