Type deduction on templated constructor.

[francesco cattoglio via Digitalmars-d-learn]

So, I have this code (also on http://dpaste.dzfl.pl/3f767b17e83c)
This Vector(T) struct is taken from gfm.math.vector.
struct Vector(T) {
        T x, y, z;
        this(X : T, Y : T, Z : T)(X x_, Y y_, Z z_)
        {
                x = x_; y = y_; z = z_; 
        }
}

void main()
{
        Vector!ubyte test = Vector!ubyte(1, 1, 1);      
}

It fails to compile because "template 
f508.Vector!ubyte.Vector.__ctor cannot deduce function from 
argument types !()(int, int, int)".
Note that if one just defines a constructor as this(T x_, T y_, T 
z_) everything works.

My question is: should this code compile? I understand that the 
literal "1" is "int" therefore it can screw type deduction, but I 
wonder if the compiler should be smart enough to deduce it 
correctly.