Fix #4471 part 2

frontend/src/metabase/components/Modal.jsx

@@ -143,8 +143,12 @@ export class FullPageModal extends Component {
         this._renderModal(false);
 
         // restore scroll position and scrolling
-        window.scrollTo(this._scrollX, this._scrollY);
-        document.body.style.overflow = "unset";
+        document.body.style.overflow = "";
+
+        // On IE11 a timeout is required for the scroll to happen after the change of overflow setting
+        setTimeout(() => {
+            window.scrollTo(this._scrollX, this._scrollY);
+        }, 0)
 
         // wait for animations to complete before unmounting
         setTimeout(() => {