Is today's assassination challenge bugged?

Games Other Halo
1

I got 4 assassinations on different players in one match earlier… I still didn’t get the challenge awarded to me even though it’s requirements are only 2.

Is it bugged?

2

Did you actually assassinate the players or just beat them down?

3

I assassinated them and had the full assassination anims 4 times.
I also won awards in the match for assassination.