-current image viewed shows as a scrunched up square thumbnail in the top bar
-formatting (spaces, new lines) is no longer preserved in the image description body
The first may be a stylistic choice... but the 2nd is especially annoying (and leads to more detailed or verbose entries looking like giants seas of unreadable run-on text)
also, just an opinion: but I much prefer regular old-fashioned text-links to the tiny boxy icons. They don't match the site's layout/color scheme, can't be read in the event images have been disabled (something I have to do when accessing from work), and are a bit hard to understand by sight alone.