Fixed: restoring scroll position when going back to index page (#6308)

(cherry picked from commit 1bc52d0138c7bcb94ffce31ec05f675387612a62)

Co-authored-by: ta264 <ta264@users.noreply.github.com>

frontend/src/Components/Table/VirtualTable.js

@@ -39,7 +39,8 @@ class VirtualTable extends Component {
     super(props, context);
 
     this.state = {
-      width: 0
+      width: 0,
+      scrollRestored: false
     };
 
     this._grid = null;
@@ -48,11 +49,13 @@ class VirtualTable extends Component {
   componentDidUpdate(prevProps, prevState) {
     const {
       items,
-      scrollIndex
+      scrollIndex,
+      scrollTop
     } = this.props;
 
     const {
-      width
+      width,
+      scrollRestored
     } = this.state;
 
     if (this._grid &&
@@ -68,6 +71,11 @@ class VirtualTable extends Component {
         columnIndex: 0
       });
     }
+
+    if (this._grid && scrollTop !== undefined && scrollTop !== 0 && !scrollRestored) {
+      this.setState({ scrollRestored: true });
+      this._grid.scrollToPosition({ scrollTop });
+    }
   }
 
   //
@@ -96,6 +104,7 @@ class VirtualTable extends Component {
       items,
       scroller,
       focusScroller,
+      scrollTop: ignored,
       header,
       headerHeight,
       rowRenderer,
@@ -180,6 +189,7 @@ VirtualTable.propTypes = {
   className: PropTypes.string.isRequired,
   items: PropTypes.arrayOf(PropTypes.object).isRequired,
   scrollIndex: PropTypes.number,
+  scrollTop: PropTypes.number,
   scroller: PropTypes.instanceOf(Element).isRequired,
   focusScroller: PropTypes.bool.isRequired,
   header: PropTypes.node.isRequired,