Game Mechanics: Disappearing Loot

[Ferok]

Yeah, this is real messed up.

Selling anything stackable to vendors is broken as well. When I tried to sell some low level research items to a vendor, this is the sequence of events:
I selected an item, vendor quoted me a price.
I pressed sell, no textual indication of payment received. Item appears to remain in inventory, and remains on the selling block.
I pressed sell again, received "you seem to have misplaced that item."
Relogged, sold item is missing from inventory.

Not totally sure whether or not I actually received payment, however.