Please note that Sell positions are closed with the Ask (Buy) price.

The price the chart is showing is the Bid (Sell) price, which is lower than the Ask price. You need to add the spread to the price that you see in the chart in order to get the Ask price.

To understand the parameters of pending orders better, you may open the price chart of the symbol so you can see the lines of all pending orders along with the current market price and the open price of your positions.