Backtest: position is not closed even though take profit pip is achieved

Hi:

I am doing a backtest using tick data from server.

From the figure below you can see that a short position is opened at 1.88894 at 19:43.

One minute later, at 19:44, the low price is 1.88816. The difference is 7.8 pips, I expected the position to be closed at 19:44 because the take profit pips of 7 is hit.

But the position is  not closed. 

This is wield to me. Could anyone kindly provide any insight why the position is not closed even though the take profit pip is hit?