Price restriction bug (1% price rule):
If there is a buy order (bid) at 0.0515 key for an item, and a sell order (ask) at 0.0520 key for the same item, a willing buyer cannot buy the item offered at 0.0520 key--he will get the "adjacent prices must be 1% spaced" error if he tries to punch in a 0.0520 key buy order.
There's both a seller and a buyer willing to trade at the same price and the system blocks it.
http://i.imgur.com/qjyvALI.png
http://i.imgur.com/jjj5hK9.png
http://i.imgur.com/F6DaRPI.png
Cheers~ ^^
Judicious
(P.S.: The implementation, most likely, due to the graphical representation of the book of orders, divided in two halves, left and right, buyers and sellers, fails to note that they actually belong to the same spectrum, and that questions of adjacency will also be pertinent across halves--in this particular case, even though 0.0520 key isn't 1% or more higher than 0.0515 key, it does match exactly another order, namely 0.0520 key, which just happens to be on the other "side" of the book; the sellers side. The division in two halves is merely a convenient representation--the offer should be accepted, as it matches an existing price already on the book--adjacency and matching should be considered across halves of the book of orders.
Even more importantly, this restriction in prices, which serves no real purpose and has no legitimate justification, is likely to continue to yield such "emergent" properties--which are just nasty bugs--that hamper trading between willing parties.
It all could be easily solved by abolishing it.)
