Same, they have delayed the check-in while confirming they are not a person of interest and that's about it? It's a bit of an inconvenience for sure but that's about it
It doesn't go away it's added to the cost of your fare on display at the top of the page. The OP knew exactly what they were being charged but chose to proceed and then dispute it later. It's a good improvement this new legend but OP was not deceived.
Actually during the booking process when you click on the seat the price comes up, then you hit ok. The price for the booking then updates but the seat legend remains the same.