Major You can't eject certain items from manufacturers.

[Thexus]

Can confirm this, and it doesn't only apply to crystalline matter, I had it happen with bee wool in a robotics manufacturer. I dont know if somewhat related, but if you put the material processor's output to the mining fabricator, it puts in the bars, but displays only 10 units, if you take out 1 unit, it dispenses all of the stored units of that type, so the items dont actually disappear. And robotics manufacturers use pharosium when the recipe needs metal, so it quickly runs out of conductive metal, it should use steel, then mauxite, then pharosium to conserve materials.