It is normal. It happens when server has a bigger limit and then it has for example 15 players in it (like in this situation) then the server changes the limit to a smaller one (14 in this case). The players who are on the server won't be kicked.
It's an admin slot - the CTRA servers show 14/14 when full, yet i know they have an unoccupied admin slot - i'm geussing LFS only shows "normal" slots, and not admin slots, therefore adding an extra 1 player, making it 15/14