I'm not sure if anyone else is having this issue, but on the Pirates tab of my friends list, it only shows the pirates I am friends with, not the players' pirates who I am only player friends with.
As provided in the screenshots below, you can see that on the Pirates tab I have 5 friends online, but on the Players tab it says I have 6. I am only player friends with all of these people (with the exception of one) but their pirates don't show up on the Pirates tab. It wont let me whisper or go to any of them.
Sorry if someone already posted a thread on this topic. I was just curious to see if anyone else was having the same problem.