This is still present in 1.90 RC2.
To clarify: only *embedded* thumbnails in CR2 files are not rotated. Thumbnails generated by XnView are correctly rotated. Meaning: in the options, "use embedded thumbnail" must be turned on for this error to show.
Thanks for your hard work and RC2 is looking good!
embedded thumbnails of CR2 RAW files not rotated in browser
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