title: "No packages found" when having Azure Artifact as package source
body: <p>Due to the usage of Babel, that require us to host ourself the package manager on a private repository, we are using Azure Devop as a source of our packages.</p>
  <p>But now when we look for any package that is not yet somewhere in the solution, we end up with a &quot;No packages found&quot;:</p>
  <p>Here we were looking for &quot;roslynator&quot;
  <a href="https://i.stack.imgur.com/9GN8J.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9GN8J.png" alt="enter image description here" /></a></p>
  <p>If I do this same request in a brand new project. No issues at all, I find the packages.</p>
  <p>but we have nuget.org correctly specified in the upstream sources:
  <a href="https://i.stack.imgur.com/MPNxQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MPNxQ.png" alt="enter image description here" /></a></p>
  <p>And the whole team is listed as contributor. I cannot find any error anywhere when we are fetching the packages. I tried to execute the command <code>Install-package Roslynator</code>. The commands succeed, and then I'm able to see the package in the GUI of visual studio(and in the web console of visual studio).</p>
  <p>Seems to be an issue on Visual studio level, but I cannot understand what is causing it?</p>