Ticket #29226: reset-client-window.29226.patch

src/wp-admin/js/editor.js

@@ -114 +114 @@
                         DOM.addClass( wrap_id, 'html-active' );
                         setUserSetting( 'editor', 'html' );
                 }
+                // Reset client window if necessary.
+                (function($) {
+                        if ( $(document).scrollTop() > $('div#wpwrap').height()) {
+                                window.scroll( 0, $('div#wpwrap').height() );
+                        }
+                })(jQuery);
                 return false;
         },