Hey everyone, having this problem and it's driving me nuts. When I click on a photo comment it will pop up blurry, basically like it hasn't fully downloaded the photo. Everything else works normally. I was on an older version of iOS on my iPhone 6 and was having this problem so I updated to iOS 9.1 and it's still happening. Facebook app is up to date as well. Is there anything I'm missing here?
Some discussion of this kind of thing at http://forums.macrumors.com/threads/facebook-photo-comments-on-6s.1934536/