SOMETHING IS NOT RIGHT

So I went to Opening Explorer and did the King's Indian Defence Normal Line 

                           d4 Nf6 c4 G6 Nc3 Bg7 e5 d6 bd3 e5 d5

               Then It said Dxe6!!!!! That is not a possible move you can only en passant if the pawn has moved twice on that move and no move after

 i forgot to mention after d5 there is c5

Explorer is only position aware, not move order aware.

From that position, there are 8 games were the previous move was e5 and c5 was played on the previous move.

You can look at the games: https://www.chess.com/games/search?f=8565341

As a case in point, the first game in that list starts out 1. d4 c5

no it's not a game it's a openings

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While it is exploring openings, the resultant stats are on positions. That is very clear by looking at the games, where they include transpositions, that result in the same positions.

En passant is part of the position. For example, to claim a draw, the positions have to have the same enpassant possibility (none of course), also, if you look at FEN the enpassant is also there.

I'll have to look at my local DB program to see how it handles things, by default, but my guess is that the site isn't looking at the whole FEN, just the piece placement part. Now, maybe it should look at that and castling rights, but it obviously isn't. 

Well, it appears they do look at the castling flag, so maybe the implementation has a minor bug when looking at en passant.