Please describe the problem:
In certain cases while playing against the computer, the computer will ignore that your pawn first move has been of 2 steps and not 1 and will eat your pawn as if it had done 1 step.

Example :
Black pawn moves from f7 to f5
White pawn at e5 takes the black pawn at f6 (but it never was there!!)

Steps to reproduce:
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Actual results:


Expected results:


Does this happen every time?
not easy to have glchess repeat the same moves...

Other information:
I have screen shots of this