Mamba - I just tested this and I can not find this bug at all, and it looks like it is fixed to me

Here is what I found:
Player 1 invites player 2 to a anti-backgammon game, player 2 accepts.

Guest looks - see's no dice yet

Player 1 looks at game, sees dice of 5-2, and loses first roll, submits.

Guest looks at game and see's the 5-2 roll

Player 2 vies games, and moved 5-2 and submits

Guest views game, can only see 5-2

Player1 views games, see's new roll of 6-2, moves and submits

Guest views game and only sees roll of 6-2

.... and so on, and so on

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The only thing I can think about the games you posted about below is that they had already looked at the board but did not make a move yet. If you look at other games in the same tournament (as a guest), you will find that you can not see the dice.