Because claiming a refund will increment your
stakeNonce, it's important to acknowledge the possibility of a race condition for the Keeper that may impact their ability to trade unless properly handled. We recommend submitting refunds when trading activity is low, between trades, or during a few-second period when you believe you will not be submitting a bid through the payment channel. If you simultaneously submit a bid and a refund, they could end up attempting to use the same nonce. And if that happens, one of them will succeed and the other will fail. If your bid succeeds and the refund fails, that would be okay because you can simply re-submit the refund later. But if the refund succeeds and the bid fails, that would be bad because you're losing out of a profit opportunity just to claim a refund that you could have claimed later.