title: FK collection returned by EF is null, but validation for duplicates, confirms thats, the collection has content
body: <p>I'm trying to get a data of all the user drone's, but ef core returning empty collection.</p>
  <pre><code>public class User : AuditableEntity
     {
         public Guid Id { get; set; }
         public string Name { get; set; }
         public string Email { get; set; }
         public string UserData { get; set; }
         public bool IsActive { get; set; }
         public bool IsAdmin { get; set; }
         public DateTime LastActivity { get; set; }
         public IEnumerable&lt;Drone&gt; Drones { get; set; }
     }
  public class Drone : AuditableEntity
     {
         public Guid Id { get; set; }
         public string CustomName { get; set; }
         public string Model { get; set; }
         public int Serial { get; set; }       
         public bool IsActive { get; set; }
         public string DroneData { get; set; }
         public virtual User User { get; set; }
     }
  </code></pre>
  <p>and <code>user.Drones</code> always has null value and i can't get and show the data, but this line of validation code</p>
  <pre><code>if (user.Drones.Contains(drone))
                      return (&quot;This drone has been alredy registred&quot;, false);
  </code></pre>
  <p>shows me that, the <code>user.Drones</code> contains values.
  Why i should do, to get <code>user.Drones</code> collection?</p>