jontysexton :
Unfortunately, when in full screen mode, your swiping recommendation merely closes full screen mode and returns it to a standard Facebook page.
No solution on my end either. I have exactly the same problem and i blame the last Facebook app update from three days ago that did it.
Things I’ve tried:
Removing and re-installing Facebook
Locking the orientation of my iPad screen with the “screen lock” button.
I also loaded Facebook in Safari on my iPad and pictures seem to work from Safari. No problem there!
If I orient my iPad in portrait, the Facebook app seems to load pictures just fine. It’s almost as if the Facebook app itself is stuck in portrait mode somehow. Also noticed the iPad dock orients in portrait when viewing Facebook pictures as if it is detecting something improperly. I’m at a loss at the moment.