Regarding your question, even in the case of a fully locked position the client's net worth will still be affected by spread changes, swap charged and so on. Through the investigation of the quote it can be seen that gold spread expanded to $ 0.72 at 01:05:00 on November 23 (server time), an increase of $0.47 compared to the spread when the gold market closed on 22th. This leads to an increase of around 6.06*100*0.47=$284.82 with regards to the customer's short and long order floating loss. At the same time, the net value dropped to 456.86-284.82=$172.04, resulting in a margin ratio of less than 40% which triggers a liquidation.

I locked my position and the margin did not reach 40%, so position was forced to be closed.