Suggested Update to PhotoTaggingGramplet to Support XMP Face Regions

I’m building a sample Tree for a tutorial article that will include Photo Tagging.
It is still fairly primitive.
The Photo Tagging keeps throwing errors when Selecting a new person for a rectangle.

Can I send a copy of the .gpkg for your experiments? (I’d like to be able to beta test as well.)

An equivalent .webp formatted image (which Gimp claims to include XMP and a thumbnail) is ~400kb. That new format is not compatible with the Photo Tagging. The .jpg is a similar size while the .png is about 2.4MB.