Ah, did you leave the freeplay yet? I know for a fact that my ultimate daily didn't advance until I actually left, even though I had the badge. It confused me at the time.
I think I was stuck at 4/6 so I quit freeplay and went back in and I swear it dropped me back down to 3/6. I was able to get the last 3 world events in that second freeplay, though.