An example is when I open $250 long position, I can see $247 instead. Do not worry about it. I do not know the reason exchanges make it like that though.
I have actually open an order at selling price of 95763 but before my order was concluded I noticed I had short the amount instead of me having $508, it ended up with $505 though want to close the order or I leave it for long time but was so much in haste to make some sales then I couldn't bear it and I finally push it at $505 instead waiting to have it at $509/10.