Photo rotation in Android app

He guys, I've got a weird issue with some photos rotating when I click on them. When I'm viewing in the main photos stream the image will appear in the correct orientation, but when I click on it it rotates. It tends to be portrait images and they then rotate to landscape. This doesnt happen if I view the image on the phone via the web browser. It isn't all photos, and I'm not sure what the pattern is.