That's because some buys went through pre market with the non adjustment of clocks.
If you send any discrepancies to support, we can reduce the cash balance in accordance with normal rules.
At the end of the month, if the winner had a large advantage from a start of month glitch, we'd look at reducing the cash by the correct amount, but it's unlikely to impact on the whole month.
Please do advise though of any more you find. (via support link)
