Code completion does not work for base class with argument which is a default argument for derived class template

template <typename T>
struct Base
{
    T t;
};

struct Foo
{
    int bar;
};

template <typename T1 = Foo>
struct Derived : Base<T1>
{

};

int main()
{
    Derived<> foo;
    foo.t.
    return 0;
}