Doorbell 2k wired , lost picture sometimes

The 2K video doorbell wired is working perfect, however there is a bug which is sometime i did not see the person put the package in the front door. I think there is a small bug which is lost the image in somehow issue.

It is always happen in left side of the doorbell camera in my active zoon. It did not active the sensor at that moment.

I hope the you guys can fix it in the future.