I believe this was fixed once, but is now broken in GitHub version. Here is the fix, taking into account the views position on the Flash stage.
private function mouseInView() : Boolean { var mx : Number = _stage.mouseX - _view.x; var my : Number = _stage.mouseY - _view.y; return mx >= 0 && my >= 0 && mx < _view.width && my < _view.height; } The current MouseManager3D ignores some events if the Broomstick view isn't at 0,0 on the stage. (i.e the ones it thinks are out of bounds)