When i make an alias VLS doesn't give me completion for existing functions.

here VLS should offer me :
coucou() and to_string()
but he give me only coucou()

here VLS should offer me : f() and abs() clamp() ...
but give only f() completion

struct foo{
	int a;
	int b;

	public void print_foo() {
		print ("Hey foo!\n");
	}
}

struct bar : foo {
	public void print_bar () {
		print ("Hey bar !\n");
	}	
}

void main() {
	
	bar f;
	
	f.//bad completion here
}