Rivals lap flagged immediately and failed to beat rival error

since Thursdays festival playlist update 19.02.26, when I play ‘any’ rivals challenge, my lap time is flagged with a small yellow asterisk symbol right from the very start of my lap Has been working fine before this, and I play rivals against my friend every week as we challenge each others times. I’ve tried all the rivals events out of curiosity and they’re all the same - when I beat the rival with a clean faster lap, I get the message ‘failed to beat rivals time’ …..help please, this is very frustrating. Playing on Xbox series X and I tried it also on my other Xbox One and it’s the same. Both machines were shut down completely..no difference..