Please add exif thumbnails to expose further orientation issues.

[ali1234]

Imagemagick has an option "auto-orient". This applies the inverse of the exif orientation to the image data, and then sets the exif orientation to "top-left" ie unrotated. However, it does not touch the exif thumbnails. This leads to an image with inconsistent orientation. The thumbnails in file managers etc will now be displayed with "top-left" orientation and so will appear incorrect, but opening the image in a viewer/editor will work correctly. Adding thumbnails to the images would allow to catch this edge case, and I expect that a lot of websites are using this feature of imagemagick.