A possible trolling bug

[ThreeDog]

Perpousely looking for trading bugs to report I saw the system was quiet solid most of the time no duplication no 3 way splits(trying to offer a gun or something to two different players and clicking buy at the same time) however there is a bug that could severely troll people say you sell something to someone and they buy it,but before he buys it you go into a shop menu and when he buys it,it will not dissapere for quite a few seconds and if you sell it in the shop it will delete the item that you just sold to the other player making the item that he paid for dissapere into thin air completely ripping him off this bug may not be common but it could be bad especially for less then reputable players.