I came across this forum in search for a way to view what Adblock Plus has been blocking, like it's previous version and I also am running on the updated version of FF. I didn't read through all of the messages so this could have been answered. But the way to view what has been blocked does not require you to refresh the page or any other advice I saw in some of the comments.
It's as simple as clicking the "Fn"
button simultaneously with the "F12"
All the elements will appear at the bottom with a single tab for adblock to view what is currently being blocked.
Any other questions, feel free to ask.