Hello Alex,
Thank you for giving it a look. Yes, you’re right about this from backend perspective. But from frontend it does not correspond to that behaviour.
In frontend, the quantity added to his balance is 1.000 and not 0.995. Fee is not deducted from what should be added to his balance (look at front screenshots), in this case 0.005.
If you want I can test it again.
Thank you in advance,
Best regards