Why would I not get credit for a seasonal co-op race?

I finished the race, blue team won every round. Co-op event does not show as “completed.”

we have completed it multiple times and it still says “available” finally just gave up, it’s broken…

Lovely that this is usually the toughest event to finish with randos, yet after finally completing it, it doesn’t pop.

I got it (Bond V8 Vantage) to complete after a few tries. I did the street scene last and got the championship completed. It seems that the season event restarted when I did the street scene 2nd.