Yes, Max Slippage is calculated differently for open and close orders. When placing an order to close an existing position, the Max Slippage is doubled.
Example: For BTCUSDT.PERP with a max slippage of 0.25%:
Trigger Price: 30,000
Close Order Slippage (doubled): 0.25% * 2 = 0.50%
Long Position: 30,000 * 1.0050 = 30,150
Short Position: 30,000 * 0.9950 = 29,850
If the current price exceeds these thresholds, the order will be canceled.