Hi @mcascone,
So this is actually working as expected. We order by the version number itself instead of the upload date, which is why you are seeing that version on the bottom. When ordering, we order first by major, then minor, then patch. So in this case 1-PLATDEV > 1-develop, which is why 2.1.1-develop-2018 drops to the bottom.
I believe we have sent this to you before, but just in case we have not. We have created an article for
Best Practices for Versioning NuGet Packages in the Enterprise. This goes into a lot more detail on NuGet versioning.
Thanks,
Dan