Bug with purchasing stackable items

[Drawde]

When testing my merchant lists I found that if you attempt to buy a stackable item (e.g food or tradeskill components) then the item you get will have 0 in the stack and be deleted, giving the error message "bad charges on stackable, deleting #itemno".
Of course, the shopkeeper still charges you for it :)
Is this a known bug?

[Gino]

Yes its known.

And the last item on the merchant list wont show up as well.
(Workaround for the moment, place a blind item at the end of the list).

Regards
Gino