Different visibility in template for class and struct?

[Shigeki Karita via Digitalmars-d-learn]

Why is local struct visible in this outer template, while local 
class is not?

https://wandbox.org/permlink/MfsDa68qgaMSIr4a
https://dlang.org/spec/template.html#instantiation_scope

---

enum p(T) = __traits(compiles, new T());

class GlobalC {}
struct GlobalS {}

void main()
{
    class LocalC {}
    static assert(p!GlobalC);
    static assert(!p!LocalC);

    struct LocalS {}
    static assert(p!GlobalS);
    static assert(p!LocalS); // ??
}