Thanks toocool,
This issue was because he was looking at only completed orders and not pending orders. So whenever he was placing a pending order it was not showing up, but it would show up as cancelled order when he clicks cancel in order book, because a cancelled order is a completed order.
@toocool, trade book shows trades (executed orders), so there will be no question of orders showing up there..
To see pending orders, press ctrl +3 if you don't see it by default. explained here:
https://zerodha.com/z-connect/trade...tware-version/orders-place-modify-cancel-view
.