Adding geolocation to some GR III DNGs corrupts image data

[Lucent]

Dragging specific Ricoh GR III DNGs to a location in the map module and assigning coordinates corrupts the files. When the preview is regenerated, some portion of the photo shows distinctive color bands indicating image data corruption.

Examples are available below. Drag them to a location on the Map module and take actions that regenerate the previews. They will show distinctive corruption.

https://www.dropbox.com/scl/fo/cy0c5iblr6yjnvwa0gqeu/h?rlkey=pwru81fddkxzkqa6d8ttsrca7

[Rikk Flohr: Photography]

Using your files and your instructions, I am unable to replicate this issue. 
A screenshot showing the corruption might be beneficial. 

Moving to Discussions

[Lucent]

This is on Windows, Classic 13.0.1. I can provide a binary diff between before/after corruption and will add the corrupted images in that same Dropbox folder.

[Rikk Flohr: Photography]

I've tested both Mac and Windows with your files:

1. Import photos
2.  Drag onto map
3.  Save Coordinates into files
4.  Discard Existing previews
5.  Build new previews 

No Corruption. 

Thank you for the screenshot. I hate to say it, but it looks like classic data corruption due to failing hardware. My recommendation is to check connections/hardware to see if you can find a fault on your end. 

[Lucent]

Unusual it'd be confined to only two photos. Another consideration is the corruption is only in rendering, RTX 4070, since it does flicker in and out, but the corrupt _R000358 thumbnail is partially missing in Windows Explorer. Could be bad file transfer from an SD card that I fixed by copying the files over again and, having not discarded previews myself, got stuck with a bad preview from the corrupt file that reappears. Thanks for looking into this and I will reopen if I can get the problem to consistently reappear.