Fred, unfortunately this is a non-fixable feature that is inherent to the motion detection and AI features. (and the DZ in your other post).
If ANY motion is detected in the non functioning DZ, the AI will interrogate and return ANY object tagged. The AI has no memory whatsoever. Every motion event is a new object.
There is a Wishlist request to change this feature. Go there, cast your vote, and then post at the bottom.