Hi Dire,
I've been finding strange interactions with inventories that have empty slots in either insert or extract slots. The node shows an item with a broken texter being extracted from the adjacent inventory. When this occurs, no other items will be extracted from the connected inventory. Seen with a couple different mods including storage drawers and with a double golden chest. Easiest method to reproduce is to use an RFTools crafter. Dropping an item in the item extraction slot works normal. However, if you put any items in the input slots, the broken extraction starts and will no longer pull anything out of the export slots on the machine. Issue has been seen in all versions of the mod and confirmed the issue still exists in 1.0.2