diff --git a/src/applications/dashboard/paneltype/PhabricatorDashboardTabsPanelType.php b/src/applications/dashboard/paneltype/PhabricatorDashboardTabsPanelType.php
--- a/src/applications/dashboard/paneltype/PhabricatorDashboardTabsPanelType.php
+++ b/src/applications/dashboard/paneltype/PhabricatorDashboardTabsPanelType.php
@@ -268,6 +268,8 @@
       $panel_id = idx($tab_spec, 'panelID');
       $subpanel = idx($panels, $panel_id);
 
+      $is_selected = (string)$idx === (string)$selected;
+
       if ($subpanel) {
         $panel_content = id(new PhabricatorDashboardPanelRenderingEngine())
           ->setViewer($viewer)