diff --git a/core/modules/block_place/js/block_place.es6.js b/core/modules/block_place/js/block_place.es6.js
index 52adce2c68..3d33648a0e 100644
--- a/core/modules/block_place/js/block_place.es6.js
+++ b/core/modules/block_place/js/block_place.es6.js
@@ -7,25 +7,19 @@
 
   'use strict';
 
-  Drupal.blockPlace = {
-    isBlockPlaceMode: () => {
-      const queryString = decodeURI(window.location.search);
-      return (/block-place=1/i.test(queryString) || /block-place-region-sort=/i.test(queryString));
-    },
-  };
+  Drupal.blockPlace.isBlockPlaceMode = true;
 
   Drupal.behaviors.blockPlace = {
     attach(context, settings) {
       // If drupalSettings.block_place is set open open dialog.
       if (drupalSettings.hasOwnProperty('block_place') && drupalSettings.block_place.hasOwnProperty('dialog_url')) {
         $(window).once('block_sort').each(() => {
-          const blockSort = Drupal.ajax({
+          Drupal.ajax({
             dialog: {},
             dialogType: drupalSettings.block_place.dialog_type,
             url: drupalSettings.block_place.dialog_url,
             progress: { type: 'throbber' },
-          });
-          blockSort.execute();
+          }).execute();
         });
       }
     },