Hi,

If I execute exiftool.exe shelf.heic (shelf.heic, zipped), I see, among other lines, this one in the output:

Warning : Truncated '\x2f\x3e\x0a\x3c' data at offset 0x1601e6.

Writing metadata e.g. with exiftool.exe -colorSpace=RGB shelf.heic doesn't work either, ET outputs:

Error: Truncated '0x2f3e0a3c' atom - shelf.heic
    0 image files updated
    1 files weren't updated due to errors

I observe those issues with other photos taken with a Samsung Galaxy A32 linked on this HEIC sample page (but not with HEIC photos taken with an iPad Air (5th gen) or iPhone 12 Pro, linked on the same page).

OS: Windows 10 Home,
ExifTool version: 13.45.