Don't accept too high fees, assuming they are erroneous

Forces fallback to "detection from trades"

freqtrade/freqtradebot.py

@@ -1448,7 +1448,10 @@ class FreqtradeBot:
             fee_cost, fee_currency, fee_rate = self.exchange.extract_cost_curr_rate(order)
             logger.info(f"Fee for Trade {trade} [{order.get('side')}]: "
                         f"{fee_cost:.8g} {fee_currency} - rate: {fee_rate}")
-
+            if fee_rate is None or fee_rate < 0.02:
+                # Reject all fees that report as > 2%.
+                # These are most likely caused by a parsing bug in ccxt
+                # due to multiple trades (https://github.com/ccxt/ccxt/issues/8025)
                 trade.update_fee(fee_cost, fee_currency, fee_rate, order.get('side', ''))
                 if trade_base_currency == fee_currency:
                     # Apply fee to amount