The volume indicator doesn’t update correctly. I have to change screens (e.g. go to menu) and then return before it updates.
Seems like a bug.
The Volume between the price to Sell and between the price to sell is reacton from the tax and fees of the instrument. Watch better how it makes difference when it’s going for Buy and when it’s going for Sell. It may have this constantly of sell and buy tarrif for you until you get it right. Some markets take the Sell if it’s Buy and make the present Take Profit for Exit when you should be at money in the currency you will be excactly at 0 balance for the position.
@Talorthain, let me take a look 
I’ll DM you shortly to check the situation further.