Switching between member function declaration/definition does not work with user-defined conversion operators

Consider the following class definition which includes a user-defined conversion operator:

class Foo
{
 public:
    operator std::string() const;
};

Foo::operator std::string() const {} // Should jump here

If a user moves the cursor over std::string() and calls "Switch between member function declaration/definition", Qt Creator opens STL's definition of std::string instead of moving to the definition of operator std::string() const.