sure they charge fees but why they don't account fees in unreaised PL of open position? This makes you overestimate your PL. As I texted before, you may see green unrealized PL and then close position and get negative (not because of slippage but because they hide fees)
How do you expect them to calculate it under unrealized PnL lol
1. You open a position using market or limit order, they deduct their fee which you know they have to.
2. And then there is an 8 hourly or 4 hourly funding fee depending on the positions you are holding
3. You close your position (They don't know when you will do this and/or whether you are going to use a limit order, market order) so tell me again how you expect them to include this in Unrealized PnL if they don't know which type of closing order you are going to use because the fees vary.
There are no hidden fees... Please read and understand how things work.