Hello,
I've noticed that exiftool refuse to update metadata of these twi files:
https://heic.digital/download-sample/sewing-threads.heic
https://heic.digital/download-sample/soundboard.heic

.\exiftool.exe -ImageDescription="My new description" .\soundboard.heic Error: Truncated '/>\x0a<' atom - ./soundboard.heic 0 image files updated 1 files weren't updated due to errors

Do you think it's a problem in exiftool, or in these specific HEIC files?
Best regards,