Receive alerts as motion detected when the motion is not human (human only is ticked) and outside the viewing zones. I have also reduced the sensitivity to 1 (low). However still receive motion detected alerts.
I have this similar issue too with my doorbell. It picks up motion outside the activity zone about 25% of the time… during the evening it’s like 80%. I have motion set to 3 if I set it any lower it fails to start recording early enough and all it will record is the back side of people walking away from my door.