This was surprising to me too. But… It may reveal the presence of newly updated firmware features…
If the detection zone is set to below the street area in the video frame (bottom half), only the movement within the detection zone is now being AI interrogated and motion tagged. I found this to be true in a recent test I did on one of my V3 after the update. I limited the DZ to 1\2 of the field (L\R). When I entered the field, it did not motion tag me until I actually broke the DZ barrier and stopped motion tagging me when I exited the DZ. Similarly, I motion activated the cam while I was outside the DZ with non PD motion inside the DZ. It activated a motion event, but did not tag me PD even though I was in the frame but outside the DZ. It would only tag PD when I was physically inside the DZ.
I didn’t think anything of your post above until I read the AMA summary you posted: