Nuget Proxy Repositories not working after update

[ThePowershellNinja]

Hello, I host multiple Nexus instances and for firewall reasons, I regularly proxy a nuget repository from one instance to another.

After upgrading from 3.70.1 to 3.73.0, my proxy nuget repositories no longer work as expected. They say that they are ready to connect, but when I try to even list packages via my nuget application, the proxy repo does not return any results, despite the upstream nuget hosted repo having at least two packages in it.

Was there a configuration change that is breaking this functionality?

I am running the sonatype/nexus3:3.73.0 docker image.