I had the thought too, but there is no way anyone else could have gotten physical control over this and shouldn't I see that AirTag when I scan for things in my surrounding as an anti-tracking protection?
I've had similar issues -- consider it a bug -- and unpair and re-pair with your phone, and likely the issue will go away.
I've had similar issues -- consider it a bug -- and unpair and re-pair with your phone, and likely the issue will go away.