Hi @grant-sparks_1282,
Thank you for the very detailed information in sharing the problem and reproduction instructions. Based on this, I'm convinced you've run into this issue: PG-2005 (POM files downloaded from Maven feeds may be saved with empty contents).
ProGet 5.3.37 (which has that fix) is scheduled to be fixed on Friday, but we may release it sooner given the impact. It's holiday in US, otherwise we likely would have done it today already
Anyways, you have two choices:
[Recommended] Upgrade to ProGet 5.3.37-rc.2; for the Inedo Hub installation, you just need to switch to the Prerelease Feed
Downgrade to ProGet 5.3.34
The only difference between 5.3.36 and 5.3.37-rc.2 is that single issue (PG-2005).
Cheers,
Alana