Originally posted by Phlabibit
This is strange, use send feedback. (bottom of every page)
A similar thing happened to me.
I played game 3577561 (having a rating of 1471), and won the game. My rating went up to 1480.
Then, I played game 3577710 (still having a rating of 1480) and the following things happened:
I made what would be my last move and clicked "refresh this board" a few times. Once my opponent had moved his pawn to the last rank (but before it had been promoted - I'm guessing he had made the move but not yet chosen which piece to promote it to) it said "This game has finished. Game drawn." and my rating dropped (from 1480) to 1452.
Refreshed the same board again (the same game, 3577710) and opponent's pawn had become a Queen; the message changed to "This game has finished. White wins." My rating dropped *again* to 1425.
No other games had been completed during this time.
So the same game returned two results, first "drawn" and then "white wins". But if you check my graph, after the previous game (3577561), which I won and initially got a rating increase for, the rating now goes down at that point (hence posting in the "rating goes down when you win?" thread).
(Sent feedback on this two Sundays ago but haven't heard anything yet.)