why are image thumbnails not displaying in finder since updating to sequoia on my m1 MacBook pro

I have been looking into this problem for a while, and recently one of my Macs was updated from 15.3.1. to 15.3.2, and the thumbnails all suddenly came back. I still had three other Macs with no thumbnails, I updated the three of them as well, and now all of four Macs are showing thumbnails.

RyckyP wrote: "...Anyone know the process for inveigling (by flattery) Apple to fix the bug?"

Rycky ~ Use this form:

Feedback - macOS - Apple

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Make sure this View/Show View Option is set for each folder you're having problems with as shown below:

Can you me a bit more specific about what you are not seeing? Are we talking about the images that Finder displays for different parts of you Mac, like Applications, Documents, Desktop?

Clicking on one image and Get Info and see what "Open With" shows. On mine it shows Preview.

This is probably the only way. But I have a lot of files in different folders, and it's not very convenient to convert. I hoped there would be a fix in 15.0.1, but nothing has changed. Thanks anyway!

You mean they actually blocked third party thumbnail previews on purpose? What would be the rationale, if any? Safety?

This is usually a preferences updating problem.

Try deleting the com.apple.finder.plist and relaunching the the finder.

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Is there any Nikon software you can use. Like the NX Studio.app?

Mine was also fixed with 15.2

Maybe, although not much better, Adobe will develop its own operating system.

Did I mention that this issue is REALLY IRRITATING.

And it seems random which png, tiff, CR2 etc. files display correctly or not.

Something changed since my post. My work Mac lost its thumbnails again. I updated to 15.4, and the thumbnails didn't come back. My other Macs are still showing thumbnails ok.