Trade is still bugged.

1. Block one port and you blockade all trade from that theater.
2. Trade lanes that transport trade of an amount like 10,XXX, will not show the first 10 but a lower number. For example: instead of 10850 it will show 850 or 0850.
3. Some trade is traded over land even when it is impossible to have an uninterrupted connection that way. For example Ottoman Empire with Spain while there are hostile states between them and they share no common border.
4. In my Spanish campaign I was earning 49K from trade with Maratha. I could follow that trade from India to the sea lane in front of the coast of Portugal where is disappeared. Instead of landing in the port of Porto, it rematerialized in northern France, went over land to Marseilles and from there by sea to my port in southern Spain and then to Madrid .