diff --git b/core/modules/system/system.admin.inc a/core/modules/system/system.admin.inc
index 3dfc42e..f4d9959 100644
--- b/core/modules/system/system.admin.inc
+++ a/core/modules/system/system.admin.inc
@@ -794,7 +794,7 @@ function system_modules($form, $form_state = array()) {
     '#title_display' => 'invisible',
     '#placeholder' => t('Search module name…'),
     '#wrapper_attributes' => array(
-      'class' => array('element-hidden js-show'),
+      'class' => array('js-show'),
     ),
   );
 
diff --git b/core/modules/system/system.base.css a/core/modules/system/system.base.css
index 539d3ac..d145b5f 100644
--- b/core/modules/system/system.base.css
+++ a/core/modules/system/system.base.css
@@ -204,8 +204,12 @@ tr .ajax-progress-throbber .throbber {
 }
 
 /**
- * For anything you want to show on page load when JS is enabled.
+ * For anything you want to show on page load only when JS is enabled.
  */
+.js-show {
+  display: none;
+}
+
 .js .js-show {
   display: block;
 }
diff --git b/sites/default/default.settings.php a/sites/default/default.settings.php
old mode 100755
new mode 100644