Order book display bug

Stacks address:SP2JWFMQB4FWN77BGGHQPV7Z2N7PYTWMHN2DPJSC4
Descriptions:place an order for 19811, the selling price is also 19811,a few seconds laters ,there is “19791” in the order book ,why does this happen???
Screenshot:

Discord ID: juxua1567#5743
Telegram ID:@furongerd

This is due to the testnet price not reflecting the real market price.