It is normal. I use official website's software here, and the same will happen, because stock index futures trading is a matchmaking system. If you want to sell a list at a certain point, the system will automatically find the latest purchase, so there will be data delay. Don't worry, it's normal. If your order is in an unfinished state, it is recommended to cancel it immediately, otherwise it is likely to be closed when it reaches the point where you sell it again. Please adopt it. Thank you.