title: Ambiguous references with the exact same namespace
body: <p>The <code>RC</code> class is not linked to a database, it is a simple class. The class is at only one place and is not partial. The Aérochem.Domain dll project compiles just fine. </p>
  
  <p>Note: If I select one of the two identical namespaces in the quick fix menu, it does nothing.</p>
  
  <p>Note2: This happens to a couple of classes (some related to a database, some not)</p>
  
  <p>Is there a fix to that or a way to figure what's wrong?</p>
  
  <p><img src="https://i.stack.imgur.com/66NFz.png" alt="enter image description here"></p>