Clang: No completion involving templated "using" in template class

#include <vector>

template<typename real = double>
class TestClass {
public:
    template<typename T>
    using ArrayType = std::vector<T>;
private:
    ArrayType<real> testMember;
public:

    void test() {
        testMember. // <--- try auto-completion here with ClangModel enabled
                    //(should not work.) Then try it with disabled
                    //(should work).
    }

};

#include <vector>

class TestClass {
public:
    template<typename T>
    using ArrayType = std::vector<T>;
private:
    ArrayType<double> testMember;
public:

    void test() {
        testMember. // <--- try auto-completion here with ClangCodeModel                 
                    // enabled (should work now.)
    }

};