For HTTP-E 3.5.3 and 3.5.1 (neither seems to be an option in the Version pulldown?!), the photo info load fails. To reproduce this, go to a picture, e.g. this one:
Move the mouse to the upper right corner of the photo until a circular overlay with a white lowercase 'i' in the middle appears. Below the mouse pointer you'll see 'Photo info\nLoading...' but the information will never load.