Ticket #30781: 30781.diff

src/wp-admin/js/customize-controls.js

@@ -128 +128 @@
         api.utils.areElementListsEqual = function ( listA, listB ) {
                 var equal = (
                         listA.length === listB.length && // if lists are different lengths, then naturally they are not equal
-                        -1 === _.map( // are there any false values in the list returned by map?
+                        -1 === _.indexOf( _.map( // are there any false values in the list returned by map?
                                 _.zip( listA, listB ), // pair up each element between the two lists
                                 function ( pair ) {
                                         return $( pair[0] ).is( pair[1] ); // compare to see if each pair are equal
                                 }
-                        ).indexOf( false ) // check for presence of false in map's return value
+                        ), false ) // check for presence of false in map's return value
                 );
                 return equal;
         };