I was trying to set up a tower of passive machines using item conduits on round-robin extracting from an ME interface containing the needed items, and using item filters to manage item transfer. It was working fine until I added an Advanced Inscriber to make Printed Silicon.

When I added this, the item conduits would only send items to the Advanced Inscriber and not other machines, despite it being on round-robin. The silicon was exposed by the ME interface, as were other items, but only the silicon was extracted. I was able to fix this by giving the Advanced Inscriber its own interface with a dedicated input. The bug is caused by either this mod or Ender IO.