Commentaire officiel
The processing our system does will occasionally show artifacts like you have identified for vertical walls and repeating patterns of roofs which generally are pretty reflective. These are two cases that can confuse our processing and is a by product of the 3D model generation method we use instead of a photo stitching method.
To be sure you are getting the overlap you think you are getting, be sure to take off as close to the highest point in the survey area as possible.