Originally Posted by
astral276
No, it's not a bug. Once an item sells, on any type of listing, the listing forms part of the contract between buyer and seller. Thus it cannot be subsequently altered in any way that impacts on a previous transaction.
Imagine you could...
Seller lists 10 off 18 carat gold rings and a buyer purchases 2. Seller then sends 2 off 9 carat gold rings to the buyer and edits the listing to read 9 carat gold. Where does the buyer now stand? The listing now says the rings are 9 carat and they got 9 carat.
The same applies to most parts of a listing once anything sells.