Unfortunately, again it is a very complicated task due to similar reasons. If you send two orders to the exchange in volatile conditions they both might execute practically simultaneously. (in some cases we wouldn’t be able to cancel the limit in time after the stop have executed).
The more practical solution is implementing an OCO (One Cancels Other) which allows you to place two connected orders. That way the exchange will handle the cancellation of the corresponding order.
We know many people have requested such feature so we’ll evaluate it and post updates if and when it’ll come.