Sets and Formats Filter

Can anybody explain to me why when you select one of the modern formats in the Filters area, you get cards from much older sets rather than the most current version of the card?
For example, I have the Filter set to "Standard (format)", yet the card Lure is showing as the version from 3ED, when this card is available in M12.
I can't seem to decipher why it does this for some cards (display an older version), while for others it displays the newer version.
Any help would be appreciated.
For example, I have the Filter set to "Standard (format)", yet the card Lure is showing as the version from 3ED, when this card is available in M12.
I can't seem to decipher why it does this for some cards (display an older version), while for others it displays the newer version.
Any help would be appreciated.