Stock keeper chips don't seem to restock if they craft an item. They are fine if they only need to pull from an inventory, but if they need to craft an item, they will craft it, and then forget about it, without restocking the inventory.

Here are some screenshots of my setup:

EDIT: I just realised that it doesn't happen if the output of the block is on the same side as the input, although for some reason it tries to craft more than it needs.

The crafting pipe can't extract from the input slot on the furnace. This is not a bug.