diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -9,7 +9,7 @@
   'names' => array(
     'conpherence.pkg.css' => 'e68cf1fa',
     'conpherence.pkg.js' => '15191c65',
-    'core.pkg.css' => '3ced0b1d',
+    'core.pkg.css' => '39061f68',
     'core.pkg.js' => '1ea38af8',
     'differential.pkg.css' => '06dc617c',
     'differential.pkg.js' => 'c2ca903a',
@@ -29,7 +29,7 @@
     'rsrc/css/aphront/multi-column.css' => '84cc6640',
     'rsrc/css/aphront/notification.css' => '457861ec',
     'rsrc/css/aphront/panel-view.css' => '8427b78d',
-    'rsrc/css/aphront/phabricator-nav-view.css' => 'a9e3e6d5',
+    'rsrc/css/aphront/phabricator-nav-view.css' => '694d7723',
     'rsrc/css/aphront/table-view.css' => '8c9bbafe',
     'rsrc/css/aphront/tokenizer.css' => '15d5ff71',
     'rsrc/css/aphront/tooltip.css' => '173b9431',
@@ -769,7 +769,7 @@
     'phabricator-keyboard-shortcut' => '1ae869f2',
     'phabricator-keyboard-shortcut-manager' => 'c19dd9b9',
     'phabricator-main-menu-view' => '1802a242',
-    'phabricator-nav-view-css' => 'a9e3e6d5',
+    'phabricator-nav-view-css' => '694d7723',
     'phabricator-notification' => '4f774dac',
     'phabricator-notification-css' => '457861ec',
     'phabricator-notification-menu-css' => '10685bd4',
diff --git a/webroot/rsrc/css/aphront/phabricator-nav-view.css b/webroot/rsrc/css/aphront/phabricator-nav-view.css
--- a/webroot/rsrc/css/aphront/phabricator-nav-view.css
+++ b/webroot/rsrc/css/aphront/phabricator-nav-view.css
@@ -83,7 +83,10 @@
 .device-desktop .phui-navigation-shell .has-drag-nav .phabricator-nav-local {
   width: 310px;
   padding: 0;
-  background: transparent;
+
+  /* See PHI568. If we don't paint the background explicitly, the content can
+     render underneath it when scrolled horizontally. */
+  background: {$page.background};
 }
 
 .device-phone .phabricator-side-menu-home .phabricator-nav-content {