BUG : onUnload not called on Wii Flash Lite connection

Step to reproduce this bug

I got it playing with the Wii, so it should be tested elsewhere too...

this.pressedDelegate = Delegate.create(this, buttonPressed);
Wii.getRemote(0).addEventListener("buttondown", this.pressedDelegate);
private function buttonPressed(event:Object):Void {
  _root.gotoAndPlay("new_game");
}

at this time, onUnload isn't called...very annoying since I usualy clean my listeners here !

To be more precise:

A SWF calls a function of my SWF via LocalConnection
this function callbacks the listener added
the listener calls gotoAndPlay

so it's perhaps because it's in the LocalConnection chain or because of Delegate ?