Hi i dont know if anyone already mentioned this , but when i have 2 or more buildings in the same chain of production theres a bug that when my carts from the bakery for example go to the windmill to get some flour, it leaves pastries in the windmill.
I think that it thinks that the windmill is a "market" since it normally will buy materials from the market, so it just dumps all the pastries in the windmill thinking it sold them.
