No, the Auto Unlock should NOT be executed at all when I come home with my car because in that case it is not needed (as I am already inside) it should only be done when I come by foot (when my cars bluetooth is not connected).
In fact I’m pretty amazed than not more people have the same issue…
I‘ve got a similar problem:
I have equipped two entrance doors (underground garage and ground floor) with a Nuki lock. Unfortunately, now with geofencing both doors always open, the first as soon as I stand in front of it (as intended), the second door as soon as I am in the house and a Bluetooth connection is established.
This is a severe problem: I always have to close one door manually. The only possibility would be to switch off Auto Unlock for both doors…
Overall: having two or more doors, you cannot / must not use Auto Unlock.
My suggestion: before Auto-Unlock check: do not trigger if triggered on another device on the same wifi in less than x minutes.