There seems to be an odd quirk that popped up doing an auction just now. Not sure it has been reported, but just to be sure:
Three cards up for sale and three buyers, all the same bid.
Seller 1 - Buyer 1
Seller 2 - Buyer 2
Seller 3 - Buyer 3
Next, one buyer places the same bid two times:
NULL - Buyer 4
NULL - Buyer 4
Seller 1 - Buyer 1
Seller 2 - Buyer 2
Seller 3 - Buyer 3
Then, buyer places a third bid - on the auction page, this is registered as the new buyer for seller 1.
NULL - Buyer 4
NULL - Buyer 4
NULL - Buyer 1
Seller 1 - Buyer 4
Seller 2 - Buyer 2
Seller 3 - Buyer 3
The bid is the same for all buyers and has not changed over the course of these events. As Buyer 1, I was distraught but wasn't willing to bid more, so I kinda just gave up. Under other circumstances, I might have even pulled my bid.
However, when the auction ended I "rightfully" received my card. I'm no expert in Javascript but it seem like kinda weird behaviour.