URL: http://www.community-orchard.org.uk/gallery
Browser / Version: Firefox 44.0
Operating System: Ubuntu
Problem type: Something else - I'll add details below

Steps to Reproduce

1. Navigate to: http://www.community-orchard.org.uk/gallery
2. Images are missing, see screenshot (really could do with being able to upload two images, one from Chrome and one from FireFox so the difference can be seen; only FF one uploaded). Load the same page with Chrome, Safari or Silk and the images are displayed correctly. Not just my device either, other users have the same problem when using FF. Note that this is a Google site and if I roll back to June 2015 all the images appear in FF, but as soon as I change the page the problems start.

Expected Behavior: 16 images and their labels should be loaded in the main page frame

Actual Behavior: only 7 images and labels, and a couple of unaccompained labels appear