https://bugs.kde.org/show_bug.cgi?id=400492

--- Comment #7 from Maik Qualmann <metzping...@gmail.com> ---
I do not see a mistake here.

Only very few cameras have Exif.Thumbnail.Orientation, yes Samsumg is one.

If you only rotate the indicator, digiKam also updates
Exif.Thumbnail.Orientation.

If you rotate the image lossless, only the main image is rotated, the preview
image is not. I do not know if LibJpeg can also rotate the embedded preview
image lossless, I do not think so.

This is of course different with the image editor, as it always generates new
image data and also generates a new preview image.

Maik

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