Is there a bug in the spot?

In the first picture, I bought 10u of BTC and now it has risen a bit, so the selling price should be more than 10u.

In the third picture, I now assume that the spot is sold, but I find that I can only buy 9.5u, which is still a loss. I wonder if it’s because of the handling fee?

In the second picture, flash exchange, it is found that it is indeed possible to sell more than 10u.

The number of Bitcoins has not changed. 0.00016938. Also took screenshots at the same time.

I don't understand even after thinking about it.