If you cancel the order, then those from below just jump after some time.
This is especially inconvenient when you need to cancel multiple orders. You should to search orders again that you want to cancel.
Developers can solve this problem very simply. After canceling the order, free space appears instead.
And after the cursor leaves this window, the remaining orders simply smoothly rise to their place.
Another idea is that when you click on your order in the “Order Book”, the same order is highlighted in “My Open Orders”