Ticket #25493: 25493.2.diff

wp-admin/includes/class-wp-posts-list-table.php

@@ -137 +137 @@
          * @return string The value of 'orderby'.
          */
         protected function get_orderby() {
-                return strtolower( get_query_var( 'orderby' ) );
+                if ( isset( $_GET['orderby'] ) ) {
+                        return $_GET['orderby'];
+                }
+
+                return '';
         }
 
         /**
@@ -149 +153 @@
          * @return string The value of 'order'.
          */
         protected function get_order() {
-                return strtolower( get_query_var( 'order' ) );
+                if ( isset( $_GET['order'] ) && 'desc' === $_GET['order'] ) {
+                        return 'desc';
+                }
+
+                return 'asc';
         }
 
         /**