We store our own NuGet packages on a file share where every developer has access to. When I change the package source in Visual Studio 2019 to our file share, every package gets listed multiple times for each version. See screenshot.
When I copy the same NuGet directory to a local folder, every packages gets listed as expected - only once. Every packages has a *.nuspec with the same id (e.g. Common or Common.Web).
I also tried to configure a mapped drive and UNC path. Same behaviour.
