There are a couple of similar reports in Suomi. The reports say that logging in again does not help.
I may have run into this bug myself earlier today. IIRC, my scoreboard showed 6 - 4 for me while the match viewer showed 4 - 2. It's common that the scoreboard is behind, however this time it was definitely ahead by a couple of baskets. For me, it's okay now, but that doesn't seem to be the case for the people who reported.