Any trick to get CR3 file thumbnails to show up in KDE / Dolphin / Plasma

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So far, so good?

$ exiv2 -vV | grep enable_bmff
enable_bmff=1
$ exiv2 -pp IMG_0150.CR3 
Preview 1: image/jpeg, 160x120 pixels, 21833 bytes
Preview 2: image/jpeg, 1620x1080 pixels, 481039 bytes