Gallery: Image orientation

[caigner]

I have images shot in portrait orientation, but the EXIF-data says: "Orientation: Rotate 90 CW"

In the gallery images are displayed as thumbnails. The thumbnails are in portrait orientation, even though the EXIF-data says otherwise.

When the image is opened (lightbox) the image is rotated clockwise as per EXIF-data (displaying a portrait in landscape orientation)

So, what is correct? The thumbnail or the opened image?

Regards,
Christian