FYI I can't find the "pinned post", nor is there anything under the tag "READ ME FIRST", so I may be breaking a guideline. Sorry in advance.
So I noticed in the playthrough that the Vortex accepts shapes, even if they are rotates compared to each other. I have had no problem with this (as seen in the image).
However, when I was building an outpost for the 2nd milestone shape, the train loader will not accept shapes that are rotates compared to one another. Instead it will just restart the progress on the "package".
I don't have video of this but I hope my explanation is enough.
I think it would make sense for the train stations to be changed so that they accept rotated shapes, based on the fact that the vortex does.