SUMMARY
When a photo is face-tagged by iOS, a RegionInfo is added like this:
  "RegionInfo": {
    "AppliedToDimensions": {
      "H": 3024,
      "Unit": "pixel",
      "W": 4032
    },
    "RegionList": [{
      "Area": {
        "H": 0.125,
        "Unit": "normalized",
        "W": "0.092999999999999972",
        "X": "0.54649999999999999",
        "Y": "0.35949999999999999"
      },
      "Extensions": {
        "XMP-apple-fi:AngleInfoRoll": 0,
        "XMP-apple-fi:AngleInfoYaw": 0,
        "XMP-apple-fi:ConfidenceLevel": 676,
        "XMP-apple-fi:FaceID": 1,
        "XMP-apple-fi:Timestamp": 10610209459322
      },
      "Type": "Face"
    }]
  }

If digikam is than used to assign a name to that region, the name is only added as a keyword. The item in the RegionList is not updated. As a result, reloading the metadata from the file will lose the name.

STEPS TO REPRODUCE
1. Take a photo on an iPhone
2. Use iOS to assign the face to a person
3. Save the photo to the PC
4. Use digikam to assign a name to the face

OBSERVED RESULT


EXPECTED RESULT
The name is added only as a keyword, and the RegionList is not updated.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION