SL3 issue: "Zoom Picture" is adding a grey border around the image

Thanks for sharing the file, Bérengère.

Since the picture has been rotated, the zoom does appear in the wrong place for this image. It's based on the original image. If you look at the size dimensions, it still holds the original image details and not the rotated version.

If you rotate the image prior to importing, it works as expected.

Check out my addition to your file attached.