Hi @arozanski_1087 ,
Once a package is added to ProGet (either via drop folder, API, web upload, etc.), it should immediately show in the web UI. And it sounds like it does... because you can see the new package in the UI.
However, if the package isn't available through NuGet (which uses the NuGet API), then it means something is using a cached API response.
It could be ProGet. Connectors in ProGet have a feature called Metadata caching, so if you're accessing this feed through a connector, and this feature is enabled on that connector, it would behave exactly how you describe.
It could also be NuGet / VisualStudio, etc. The simplest thing to do would be to just run Fiddler, and capture the communication between NuGet/VS and ProGet. You will see cached responses if this is the case.
It might be a proxy/third-party server. Someone would have had to configure this in your network, and maybe they did to reduce traffic at one point? This should also show up in the Fiddler trace, hopefully, as a cached response.
Thanks,
Alana