PvP Locker Bugged
This may not be a bug, but perhaps intended.
Firstly, why do you need several of the same items? You can salvage them, and eventually can use the mystic forge to get other items.
If you are running out of room, then use your bank.
I know you can salvage items, but I want to have more than in the locker at a time because I want to have at least one set for each of my toons.