Consider the following piece of cpp code. The problem is described as a comment inside the code.

----------

/// this is the global namespace
namespace Namespace{

// uncomment to make the bug disappear :
//using namespace Namespace; 
  
/// this is a struct
struct Struct
{
};

/// this is a class
class Class
{
public:
  /// A function
  /// 
  /// Detailed description
  static void function( Struct s); // correct : link to Struct is present in the function documentation
};

/// A function in the namespace
/// 
/// Detailed description
void function( Struct s); // BUG : link to Struct is missing in the Function Documentation !

}

The missing link bug is illustrated HERE ("Struct" is not clickable, when it should be) :

http://prenomstat.com/doxygenNsLinkBug/namespace_namespace.html#a5d888a5b4762a99391bc79460452a662


Strangely enough :

- Within a class instead of a namespace, this problem does not appear
- The problem disappears when writing "using namespace Namespace;" after starting "namespace Namespace {" !! But of course this is not clean at all.

This problem has been observed with doxygen 1.8.6 and 1.8.7.

Hope you will find a solution.