Either per image on the post, or as a general plugin option, it would be nice, as a user, to be able to help and restrict which image regions will be selected.
In most cases, our plugin doesn't render the web component in post/page editors (e.g. Elementor or Gutenberg). So what you see while editing isn't what you will get as a visitor of the website.
So far we support only rectangle XMP image regions, which can only represent horizontal/vertical rectangles. In the future we also would like to supported rotated rectangles, expressed in the XMP metadata as polygons/vertices.