Rekognition bound boxes

Hi everyone!

Currently, I've accomplished detecting all the faces from a collection and then generating sub-galleries of each individual subject with all their photos associated with the ruby SDK '~> 1.65' In order to do this, I've indexed the faces of all photos within a collection, list all the faces (https://docs.aws.amazon.com/sdk-for-ruby/v3/api/Aws/Rekognition/Client.html#list_faces-instance_method), then grabbing each face_id recognized and search the faces related to that face_id (https://docs.aws.amazon.com/sdk-for-ruby/v3/api/Aws/Rekognition/Client.html#search_faces-instance_method), and delete the face id used to do the API call and all the returned ones to tell when a new detected subject starts and ends.

My issue is that some indexed faces are returning a wrong bound box not fitting the face properly with a few images, sometimes not even close to the face (I've seen a brick as a bound box). This is weird because internally those "wrong faces" seem to be associated properly with other faces as if the service were just returning wrong box values but doing all the AI jobs properly.

Is there a way to prevent or tweak the call params to prevent this? or is it normal for the API to return sometimes wrong values due to the multiple decimals?

Thanks in advance!