message: Scrollable parent - use window instead of body
diff: @@ -84,6 +84,9 @@ function findScrollableParent(element: HTMLElement): HTMLElement {
  }
  if (element.scrollHeight > element.clientHeight && (getComputedStyle(element).overflowY === "scroll" || getComputedStyle(element).overflowY === "auto")) {
  + if(element === document.body) {
  + return <any>window;
  + }
  return element;
  } else {
  return findScrollableParent(element.parentElement);
  