commit 9d703d64f90f5d49144f086672349fc0d305a970
Author: Joel Pittet <joel@pittet.ca>
Date:   Mon Apr 29 23:18:36 2013 -0600

    fixed title attribute

diff --git a/core/modules/views_ui/views_ui.theme.inc b/core/modules/views_ui/views_ui.theme.inc
index fc914cc..3c337b4 100644
--- a/core/modules/views_ui/views_ui.theme.inc
+++ b/core/modules/views_ui/views_ui.theme.inc
@@ -29,7 +29,7 @@ function template_preprocess_views_ui_display_tab_setting(&$variables) {
   }
   if (!empty($variables['overridden'])) {
     $variables['attributes']['class'][] = 'overridden';
-    $variables['attributes']['title'][] = t('Overridden');
+    $variables['attributes']['title'] = t('Overridden');
   }
 
   // Append a colon to the description, if requested.
@@ -46,7 +46,7 @@ function template_preprocess_views_ui_display_tab_bucket(&$variables) {
   }
   if (!empty($element['#overridden'])) {
     $variables['attributes']['class'][] = 'overridden';
-    $variables['attributes']['title'][] = t('Overridden');
+    $variables['attributes']['title'] = t('Overridden');
   }
 
   $variables['content'] = $element['#children'];