I found a pretty significant bug. When using the Long-Range Mineral Scanner tuned to mechanoid parts, I've been using it for a while with nothing found, until suddenly I heard a bunch of dings and notifications of new parts appearing kept showing up about once a second. Around a dozen, I tried drafting the colonist working on the scanner, which stopped it, but when they went back, it went back to discovering more very rapidly. Switching the target to normal components caused one resource to be found, and then stop queuing up new ones, resuming normal work. Let me know if there's anything I can do to help debug further.