Yes, the heat pipe thing appears to be a vanilla bug. And it the way I read this is that a bug was fixed, but only partially resulting in this order placing bug. You may need to comment on that thread, and / or post a new bug.
To your blueprint statement though. Did you use the migration from miniloader function of this mod? Despite the visual similarities, this mod is actually completely new and not a continuation of Miniloaders. I'm now very curious how blueprints got handled, because I did not do any specific handling of blueprints.
