Yesterday I got all 4 essences, opened the portal... waited for a friend to connect, and the portal vanished right in front of me... I've been trying to collect essences again all afternoon, but they're not appearing... WTF?? Can you only open it once? If you haven't been inside, why won't it let me open it again??? Or did it close when I invited players from my friends list? If they do drop, what's the drop rate? I'm seeing a lot of bugs in this update. Playing with my mage, it's the tenth time he's gotten stuck levitating while fighting bosses in the Diablo 3 archon style... it only lets me dodge in that situation.....