Revert "Fixed scrolling via jump list on series index"

This reverts commit 5d316ad7dc.

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

@@ -71,6 +71,7 @@ class SeriesIndexOverviews extends Component {
       items,
       sortKey,
       overviewOptions,
+      jumpToCharacter,
       isSmallScreen
     } = this.props;
 
@@ -95,6 +96,18 @@ class SeriesIndexOverviews extends Component {
       // recomputeGridSize also forces Grid to discard its cache of rendered cells
       this._grid.recomputeGridSize();
     }
+
+    if (jumpToCharacter != null && jumpToCharacter !== prevProps.jumpToCharacter) {
+      const index = getIndexOfFirstCharacter(items, jumpToCharacter);
+
+      if (this._grid && index != null) {
+
+        this._grid.scrollToCell({
+          rowIndex: index,
+          columnIndex: 0
+        });
+      }
+    }
   }
 
   //
@@ -188,7 +201,6 @@ class SeriesIndexOverviews extends Component {
     const {
       scroller,
       items,
-      jumpToCharacter,
       isSmallScreen
     } = this.props;
 
@@ -210,24 +222,6 @@ class SeriesIndexOverviews extends Component {
               return <div />;
             }
 
-            let finalScrollTop = scrollTop;
-
-            if (jumpToCharacter != null) {
-              const index = getIndexOfFirstCharacter(items, jumpToCharacter);
-
-              if (index != null) {
-                if (index > 0) {
-                  // Adjust 5px upwards so there is a gap between the bottom
-                  // of the toolbar and top of the poster.
-
-                  finalScrollTop = rowHeight * index - 5;
-                } else {
-                  finalScrollTop = 0;
-                }
-
-              }
-            }
-
             return (
               <div ref={registerChild}>
                 <Grid
@@ -241,7 +235,7 @@ class SeriesIndexOverviews extends Component {
                   rowHeight={rowHeight}
                   width={width}
                   onScroll={onChildScroll}
-                  scrollTop={finalScrollTop}
+                  scrollTop={scrollTop}
                   overscanRowCount={2}
                   cellRenderer={this.cellRenderer}
                   scrollToAlignment={'start'}