fix #2383

freqtrade/freqtradebot.py

@@ -802,16 +802,26 @@ class FreqtradeBot:
         """Buy timeout - cancel order
         :return: True if order was fully cancelled
         """
-        self.exchange.cancel_order(trade.open_order_id, trade.pair)
-        if order['remaining'] == order['amount']:
+        corder = self.exchange.cancel_order(trade.open_order_id, trade.pair)
+        if corder['remaining'] == corder['amount']:
             # if trade is not partially completed, just delete the trade
             self.handle_buy_order_full_cancel(trade, "cancelled due to timeout")
             return True
 
         # if trade is partially complete, edit the stake details for the trade
         # and close the order
-        trade.amount = order['amount'] - order['remaining']
+        trade.amount = corder['amount'] - corder['remaining']
         trade.stake_amount = trade.amount * trade.open_rate
+        # verify if fees were taken from amount to avoid problems during selling
+        try:
+            new_amount = self.get_real_amount(trade, corder)
+            if not isclose(order['amount'], new_amount, abs_tol=constants.MATH_CLOSE_PREC):
+                trade.amount = new_amount
+                # Fee was applied, so set to 0
+                trade.fee_open = 0
+        except DependencyException as e:
+            logger.warning("Could not update trade amount: %s", e)
+
         trade.open_order_id = None
         logger.info('Partial buy order timeout for %s.', trade)
         self.rpc.send_msg({