A revision on the contract system is about to be rolled in. If all goes well, you should notice almost no difference. It does fix a few bugs (including one that I didn't even know was a bug, much less fixed, until after this was done), and should hopefully take care of the major problems in IP contracts.
The unusual bug was that you were only getting a small fraction of the types of goods available for delivery. Enjoy the 'new' items.
~ Kaikyu ~