Fixed: Restoring scroll position when going back to index page

frontend/src/Series/Index/Overview/SeriesIndexOverviews.js

@@ -60,7 +60,8 @@ class SeriesIndexOverviews extends Component {
       columnCount: 1,
       posterWidth: 162,
       posterHeight: 238,
-      rowHeight: calculateRowHeight(238, null, props.isSmallScreen, {})
+      rowHeight: calculateRowHeight(238, null, props.isSmallScreen, {}),
+      scrollRestored: false
     };
 
     this._grid = null;
@@ -72,12 +73,14 @@ class SeriesIndexOverviews extends Component {
       sortKey,
       overviewOptions,
       jumpToCharacter,
+      scrollTop,
       isSmallScreen
     } = this.props;
 
     const {
       width,
-      rowHeight
+      rowHeight,
+      scrollRestored
     } = this.state;
 
     if (prevProps.sortKey !== sortKey ||
@@ -97,6 +100,11 @@ class SeriesIndexOverviews extends Component {
       this._grid.recomputeGridSize();
     }
 
+    if (this._grid && scrollTop !== 0 && !scrollRestored) {
+      this.setState({ scrollRestored: true });
+      this._grid.scrollToPosition({ scrollTop });
+    }
+
     if (jumpToCharacter != null && jumpToCharacter !== prevProps.jumpToCharacter) {
       const index = getIndexOfFirstCharacter(items, jumpToCharacter);
 
@@ -255,6 +263,7 @@ SeriesIndexOverviews.propTypes = {
   items: PropTypes.arrayOf(PropTypes.object).isRequired,
   sortKey: PropTypes.string,
   overviewOptions: PropTypes.object.isRequired,
+  scrollTop: PropTypes.number.isRequired,
   jumpToCharacter: PropTypes.string,
   scroller: PropTypes.instanceOf(Element).isRequired,
   showRelativeDates: PropTypes.bool.isRequired,