Photos get rotated 90 degrees
Some photos get rotated 90 degrees. Other users see the rotated photos. The person uploading the photos sees them correctly.
Looks like some CSS bug
Drive Zone hard to say. The issue probably affects users who upload photos from an iPhone. I've seen in posts that others have had this problem before, but there's no mention of a solution there. I've just opened a support ticket.
It used to happen on my site and then went away. Now it has started again with iPhone users.