Alarming bug in AIR SDK 4.0.0.1390, -useLegacyAOT no

I've created a radically simplified testcase that isolates the bug.  When creating two instances of a class in a static function, those references are both set to the second instance only when using halfmoon compiler:

https://gist.github.com/jcward/7066bc017bf92531f594

Errant function reproduced here for discussion purposes:

  public class Foo

  {

    public function Foo() {

    }

    static public function something():void

    {

      // Create two unique objects, they cannot be the same

      var A:Foo = new Foo();

      var B:Foo = new Foo();

      Main.t.text += "Created Foo, A="+A+"\n";

      Main.t.text += "Created Foo, B="+B+"\n";

      // But in halfmoon, the references are the same:

      if (A==B) {

        Main.t.text += "ERROR: reference A cannot be equal to B, wth halfmoon?"

        throw new Error("Halfmoon-induced error, A != B");

      } else {

        Main.t.text += "A-OK, two unique Foo references!"

      }

    }

    private var ID:int = Math.random()*0xffffff;

    public function toString():String {

      return "[Foo] " + ID;

    }

  }