Ini jawapan dari Exness support:
At 08:30 on 15th of December a group of news was issued regarding EUR and CHF, which caused fast market movement.
At that time order #31356492 hit the SL level, and actual market price jumped right to 1.22883, there was a gap.
According to the regulations of gap execution(
https://www.exness.com/forex/specifications), the order will be executed at the first market quote in case the price set in the pending order hits the gap and the difference between the first market quote (after the gap) and the order price will equal or exceed a definite pips quantity (gap-level) for the definite instrument.
In this case difference was over 31 points, therefore SL was executed at first available price, with slippage.
May i remind you that in case of TP slippage, trader will gain additional profit instead of losses.