"Buy 0 null at price 0 null/null" pop up

Hello. I tried to make a buy order with the cheapest price on the orderbook and maximize my order to 100% so it won't be filled easier. It was submitted on open orders And now i cancelled my order then a confirmation pop-out came out. I tried to turn on 'Auto Confirm for dex.testnet.tomochain.com' and i cancelled my order. Everything is normal.

Consequently, i tried to make another buy order, same cheapest price and 100% so it wont get filled immediately. Now, its submitted on open orders. As you can see on the picture below, it was already filled 3% and then i decided to cancel out again the order. This time it dont require confirmation anymore because i turned the auto confirm on with the cancellation of first transaction. Suddenly, a pop-out came and seems need to be fixed:
"Buy 0 null at price 0 null/null".


I hope i have figured out this bug.

Here is my Tomo wallet address:
0xafb82d9c2609ead9534774b16f9d1377d2decea3