Template interface and class

[gerleim]

The following will result in
"class test.C1 interface function I1.Foo isn't implemented"

class C1 : I1
{}
public interface I1
{
	void Foo();
}

, but 
class C(T) : I!(T)
{}

public interface I(T)
{
	T Foo();
}

will give compile error only if a declaration of the class is present somewhere.

Is this normal?