Downloaded “forked” games are losing the black stones

Recently, dowloaded “forked” games are losing the black stones.

To test, open this game: MatthewH vs. CuriousMynd

Download the game and open it in an editor. The sgf code for black positions should be AB, but instead it is B.

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Is it forked from real game or demo/review board?

I resigned the game and my opponent immediately forked it at move 45. Here is the resigned game: MatthewH vs. CuriousMynd