I placed buy order for 1 BitBTC for 15700BTSX. After a while I received 0.99999998 BTC and 15,699.99984 BTSX was deducted.
Problem is with remaining 0.00016 BTSX which is still in open orders and it can not be cancelled as I get message that cancelation fee is higher than balance being cancelled.
You can see it in Buy Orders second from the top. It is not causing any problems for me, but just wanted to report it.