I can't say for sure if this works for the circuit too, but I know in the experience while if you leave/fail out that it will give you a blank reward screen like that, but if you check your inventory the stuff is there (at least the marrow and cinta parts that I knew what I had before hand) I feel like there's an issue at the moment where the rewards get saved at certain points, but if you drop out or fail, it only uses the info from the failed round. But like I said, haven't checked on the circuit, so don't know if it's the same way.