I just played a match https://online-go.com/game/1250882
When I won, I automatically clicked accept, because the victory was pretty obvious. However, the scoring couldn’t see I had won, even though I had all the stones on the board, and white had 1.
I guess I have learned to not click accept without actually checking, but I was thinking this might be a bug in the calculation algorithm, as it seems to be a very clear case of one side winning.