YO Protocol's Automated Harvesting System executed a rebalance with a misconfigured slippage tolerance of 17,872,058 (disabling protection). The order routed through high-fee Uniswap v4 pools (85-88%), returning only 112,036 USDC for 3,840,651 stkGHO, costing ~97% of vault stkGHO. YO's multisig bought the position back the same day.