Explicit reference to typedef from template base not recognized

struct Foo { int bar; };

template<typename T>
struct Base { typedef T F; };

template<typename T>
struct Derived : Base<T>
{
    typedef typename Base<T>::F F;
    F f;
};

void func()
{
    Derived<Foo> d;
    d.f.bar; // bar not highlighted
}