Haha, if only every bug report was this entertaining
Hm, I'm not sure if this should be considered a bug or not, though. I mean, why shouldn't they be able to physically insert the part into the machine so long as the insertion location exists? It just can't be
processed (which won't happen). (And theoretically that item
is retrievable by destroying any remaining pieces of the Recycling Unit.)
That said, it appears this report has highlighted a
different bug in the AI, that if a Mechanic is in the process of pathing towards a Repair Station in order to resupply, during which a separate part of that station is disabled, it'll continue pathing there and complete the resupply process. Technically this could be somewhat logically explained, but I'm going to make that impossible. As for the Recyclers, I think they should continue to insert parts, yeah?
Edit: Oh yeah, and Recycler hate is definitely common throughout the world of Cogmind. Welcome to the Club