message: fix(reakit-utils): Fix `getActiveElement` returning an empty object on IE 11
diff: @@ -4,5 +4,11 @@ import { getDocument } from "./getDocument";
  * Returns `element.ownerDocument.activeElement`.
  */
  export function getActiveElement(element?: Element | Document | null) {
  - return getDocument(element).activeElement;
  + const { activeElement } = getDocument(element);
  + if (!activeElement?.nodeName) {
  + // In IE11, activeElement might be an empty object if we're interacting
  + // with elements inside of an iframe.
  + return null;
  + }
  + return activeElement;
  }
  