
One of them was just a route between 2 islands, and it would skip to the next immediately upon undocking from one of the islands, meaning it would then dock back up again. I've now seen this on a few trade routes. If the ship was selected at the time, you could actually see the little grey track that displays what trade route it is on, switch suddenly from one leg to the next. For some reason, as they approached the main island to pick up oil, they would get a few grids away and then skip to the next leg, completely bypassing the pickup island. I have 9 oil tankers picking up oil at one port, and dropping it off to all my other islands on the map.

I first noticed this with a oil route I have. Since last patch I've noticed some of my trade ships are skipping from one trade leg to the next without first visiting/unloading at the island in between.
