Bid / Ask / MD
Dear client!
What you’ve experienced is called “slippage”.
Slippage is an event when the execution price of your order differs from what you expected it to be.
Slippage is totally natural for market execution (especially when one is trading some not too liquid assets like HSIHKD, for example).
As to the fact that you can’t see your execution price on the chart, then please, allow us to remind you that in the market execution prices always depend on the trading volume. Thus, at any given moment of time there may be several prices available for executing orders - one price for each available volume. This is called “market depth”.
Usually low volumes get executed at better prices (so called “top of the book”), but it can’t be guaranteed.
Please, remember, that market execution (unlike instant execution) can never guarantee the execution price that you wish to get, even if we talk about something about highly liquid assets.
Unfortunately, MetaTrader doesn’t have a technical capability to demonstrate all available prices for all available volumes available at all times on the charts. The charts in this trading platform are plotted based on top of the book bid price.
That said, you shouldn’t expect to see all your execution prices on the chart at all times.