They are back!!
Gosh, they must have been hiding very far under the sofa cushions... Great news, though!
(I am completing so few new skills nowadays that I had to scroll a lot until I found mine... :-)
Well, they are indeed back, but if you like one icon on one's activity stream, it turns to an egg again... But they are back after you refreshed the page. Nevertheless, it looks so much nicer now (again) =)
I'm not the only one! ^^ Only, when I like their achievement, it goes back to the cracked egg. :/