Really Strange Bug
 

OK, me and one of my friends were on board his ship and were attacking a Navy Greyhound flagship when the prompt to board came up. He had to decide whether or not to board so I waited for about ten seconds. He took the wheel at the end of those ten seconds and all of a sudden I get the cutscene that you get to board, but instead of it showing my pirate boarding, it showed the water underneath the ship and stayed like that for about two seconds and briefly showed my pirate underwater and then the screen goes black and I hear the jail music.

I had to log out since it was stuck on the black screen.

When I log back in, I'm in jail with no explanation as to what happened.

wow creepy