Same problem with coop on PC. Other person can't select the mandatory hard tire in the strategy view and it isn't available in the race. It was in Miami a race also after a sprint weekend.
Yep, i can confirm. We had the same problem in co-op career (Xbox).
After a sprint weekend, the non-host gets this bug. Happened twice now. So for now, disabling sprint races seems to be a workaround (if that's even possible in the options).
@jenny_a_m just to add to this. Link to tiametmarduck and Alex Gillons co-op career YouTube video posting in the last week
19:30 into vid shows the same issue.
But you cannot disable the sprint weekends in co-op career, can you? ☹️
