Exactly the same for me. I'm using Firefox and I'm not signed in to Google+. Visiting the given URL in another tab works, but I have to click to disable the "Translated in Safe Mode"-feature first.
Safe mode disallows scripts. It should be disabled. Not sure about google plus, it works for me in incognito.
Yep, that's what I'm seeing too, and nothing much happens when you click on anything, on Chrome or FF.