This explains some odd behavior but it's not a big deal.
This is a monstrous fuckup of enormous proportions, if this is true then their "trading engine" is broken beyond repair (it wouldn't even deserve the name "trading engine" anymore) and should be taken down and replaced by something else immediately!
Lucky it's a free market then and you can just take your business elsewhere, innit?
yeah its a free market with horrible options, and hopefully some professional players will enter a market that is WIDE open for the taking. bunch of amateurs in this niche.