Cause it seems it is not addressed in the first patch:

as it should be:
port: Increase tradeable goods + 'ships'
Shipwright: Increase tradeable goods + 'ships'
Dockyard: Increase tradeable goods + 'ships'
Naval Drydock: Increase tradeable goods + 'ships'

Merchant's Wharf: Trade fleets available 1 + Increase tradeable goods
Warehouse: Trade fleets available 2 + Increase tradeable goods
Docklands: Trade fleets available 3 + Increase tradeable goods


as it is now:
port: Trade fleets available 1 + Increase tradeable goods + 'ships'
Shipwright: Trade fleets available 2 + Increase tradeable goods + 'ships'
Dockyard: Trade fleets available 3 + Increase tradeable goods + 'ships'
Naval Drydock: Trade fleets available 3 + Increase tradeable goods + 'ships'

Merchant's Wharf: Increase tradeable goods (?)
Warehouse: Increase tradeable goods (?)
Docklands: Increase tradeable goods (?)

Interesting:
In export_descr_buildings.txt (provided by CA) it is correct implemented.
So, I'm not sure if it is fixed in the new build.