Show moves button does not show me what I expect

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Avatar of xdannil

So I reach a position during the game review, like this one: https://www.chess.com/analysis/game/computer/128495621?tab=review&move=20

It tells me that 20. Bd2 is a miss and "You missed an opportunity to win a pawn through a discovered attack.", and under it the button "Show moves".

Of course I expect to be shown the moves with which I would win that pawn, but instead I'm shown a normal continuation, and when it is finished that pawn is never captured. What exactly does the "Show moves" button in this case?

It seems a bit strange that it does not first undo move 20 and shows me what I should have done instead, so I am obviously missing something here...

Thanks!