Icmarkets aneh. XAUUSD OP Sell 1777 tapi loncat ke 1778. Begitu di closed malah rugi

Master, I found something strange in my ic markets broker. I opened a Sell position at 1777 but suddenly it became 1778. Immediately turned blue for profit, but when closed it turned red for loss. So strange, happened 3 times. Be careful with this broker. I also found some anomalies in their price chart, the prices jumped around. I once caught ic markets jumping from, for example, xauusd 1800 to 1700 in just 1 second, a 1000 point jump in just 1 second, and then back to the original price, a 1000 point jump in just 1 second. I'm switching brokers soon.