Editing RAW images results in blank white grey thumbnails

This seems to be a bug I am experiencing also, though I am on Catalina, not Big Sur - If it is the same problem I am seeing, not fixed in Big Sur, reverting edits to original will bring the image back to normal - after which you can edit again without problems.

The workaround I use is:

Import the raw files

Select them all (in all photos view)

CMD-E (auto enhance)

Image menu>Revert to original (while they are all still selected)

From then on they all work fine.

If you can find time, please report the bug at the link below. The more who do, the better the chance that Apple will fix it.

https://www.apple.com/feedback/photos.html

MacOS 11.1 is supporting the RAW format of your camera.

Could there be a problem with the external SSD drive? To be compatible with Photos, the external drive should be locally mounted (connected by a USB or thunderbolt cable) and not have been used for Time Machine backups. The file system format should be APFS or MacOS Extended (Journaled).

if a thumbnail is white, try to revert the edited photo to the original and start over with editing it. The recent system update may have changed the RAW support, so the RAW files will need reprocessing the RAW.

Hi, I have the same on the MacBook Air (M1, 2020), macOS Big Sur 11.1 (20C69).

Photos were imported from the Sony ILCE-5000 camera via USB cable, through the GreenCell USB-C hub, straight from the camera.

Photos library is stored on the external Samsung T7 1TB SSD drive connected via USB-C cable.

To fix the "blank" photos I had to mark all of them, hit "Revert to original" (from the context menu) and then, open these photos, one by one, and click "auto enhance".

Really annoying.

What's the bug reporting procedure in Apple? It could be great to report it and ask for a quick patch.

Happy New Year by the way!

Hi

Link to bug report in my post above - plus my workaround. You can also select multiple pictures as thumbnails, and auto enhance them all in one step.