Add definition refactoring bug

using namespace std;
class B {
public:
vector<int> func(int x);| // Here I call refactoring "Add definition"
};

This will generates correct code, i.e.,

vector<int> B::func(int x)
{
}
--------------------------------------
However, without "using namespace std"

class B {
public:
std::vector<int> func(int x);| // Here I call refactoring "Add definition"
};

generated code is not correct,

vector B::func(int x) // <int> is missing
{
}