~= call copy ctor?

[Namespace]

If i @disable the postblit i get a strange behaviour:

[code]
struct Test {
public:
	int _id;

	this(int i) {
		_id = i;

		writeln("CTOR");
	}

	@disable
	this(this);

	~this() {
		writeln("DTOR");
	}
}

void main() {
	Test[] _arr;

	_arr ~= Test(42);

	writeln(_arr[0]._id);

	writeln("end main");
}
[/code]

prints:

CTOR
DTOR
42
end main

The DTor is called _before_ i write Test's id but i can still 
print the correct id.
Implicit Copy CTor? ;)