I have a few photos in my galleries that are in portrait layout. They look fine on a desktop browser, but on mobile (iPhone/iPad), the images are rotated 90 degrees on both the gallery preview and in the slideshow.
I found that the picture file properties on certain files were still rotated incorrectly. The desktop browser was correcting this automatically. I fixed the properties of the photo files and re-uploaded them to my media library and re-added them to the gallery. This fixed the issue. Thanks anyway! Erik
