Canon RAW images and macOS 15.4

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Just a warning for Canon camera owners to be wary of installing macOS 15.4.

For some people (maybe all?) with Canon RAW images (CR2 and CR3):
Finder in column view shows a black rectangle for the photo preview.
Quick Look from Finder shows a black rectangle.

There is no problem viewing images with the Preview App or any Adobe app. Thumbnails (Finder Icon view) show as expected.

I interpret this as being a bug in the image Quick Look generator. I have done a Feedback report.

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The Verge has a article about camera makers using proprietary RAW formats instead of open standards.

(We asked camera companies why their RAW formats are all different and confusing | The Verge)