SFINAE works with deduction but fails with substitution

Consider the following MCVE

struct A {};

template<class T>
void test(T, T) {
}

template<class T>
class Wrapper {
    using type = typename T::type;
};

template<class T>
void test(Wrapper<T>, Wrapper<T>) {
}

int main() {
    A a, b;
    test(a, b);     // works
    test<A>(a, b);  // doesn't work
    return 0;
}

Here test(a, b); works and test<A>(a, b); fails with:

<source>:11:30: error: no type named 'type' in 'A'
    using type = typename T::type;
                 ~~~~~~~~~~~~^~~~
<source>:23:13: note: in instantiation of template class 'Wrap<A>' requested here
    test<A>(a, b);  // doesn't work
            ^
<source>:23:5: note: while substituting deduced template arguments into function template 'test' [with T = A]
    test<A>(a, b);  // doesn't work

LIVE DEMO

Question: Why is that? Shouldn't SFINAE work during substitution? Yet here it seems to work during deduction only.