Only show this period's value in tooltip

extensions/statistics/js/admin/src/components/StatisticsWidget.js

@@ -107,8 +107,8 @@ export default class StatisticsWidget extends DashboardWidget {
     }
 
     const datasets = [
-      {values: lastPeriod, title: 'Last period ➡'},
-      {values: thisPeriod, title: 'This period'}
+      {values: lastPeriod},
+      {values: thisPeriod}
     ];
 
     if (!context.chart) {
@@ -121,9 +121,7 @@ export default class StatisticsWidget extends DashboardWidget {
         y_axis_mode: 'span',
         is_series: 1,
         show_dots: 0,
-        colors: ['rgba(0,0,0,0.1)', app.forum.attribute('themePrimaryColor')],
-        format_tooltip_x: d => d,
-        format_tooltip_y: d => d
+        colors: ['rgba(0, 0, 0, 0.1)', app.forum.attribute('themePrimaryColor')]
       });
     } else {
       context.chart.update_values(datasets, labels);

extensions/statistics/less/admin/extension.less

@@ -63,4 +63,9 @@
   clear: left;
   max-width: 600px;
   margin: -20px -10px;
+
+  // Hide the "last period" data from the tooltip
+  .chart-container .graph-svg-tip ul.data-point-list > li:first-child {
+    display: none;
+  }
 }