This looks like some kind of race condition bug but toward the end of an auction I have received several of these. The mail states "
Your bid is winning. Stay tuned so you don't lose out.
and then shows a picture of the item with a current bid one tick above my maximum bid. Clearly at this point I have been outbid. Looks like checking the bid needs to be the last step before sending the mail, rather than the first step before preparing it.
