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diff --git a/web/core/modules/toolbar/js/escapeAdmin.es6.js b/web/core/modules/toolbar/js/escapeAdmin.es6.js
new file mode 100644
index 000000000..c381f021c
--- /dev/null
+++ b/web/core/modules/toolbar/js/escapeAdmin.es6.js
@@ -0,0 +1,43 @@
+/**
+ * @file
+ * Replaces the home link in toolbar with a back to site link.
+ */
+
+(function ($, Drupal, drupalSettings) {
+  const pathInfo = drupalSettings.path;
+  const escapeAdminPath = sessionStorage.getItem('escapeAdminPath');
+  const windowLocation = window.location;
+
+  // Saves the last non-administrative page in the browser to be able to link
+  // back to it when browsing administrative pages. If there is a destination
+  // parameter there is not need to save the current path because the page is
+  // loaded within an existing "workflow".
+  if (!pathInfo.currentPathIsAdmin && !/destination=/.test(windowLocation.search)) {
+    sessionStorage.setItem('escapeAdminPath', windowLocation);
+  }
+
+  /**
+   * Replaces the "Home" link with "Back to site" link.
+   *
+   * Back to site link points to the last non-administrative page the user
+   * visited within the same browser tab.
+   *
+   * @type {Drupal~behavior}
+   *
+   * @prop {Drupal~behaviorAttach} attach
+   *   Attaches the replacement functionality to the toolbar-escape-admin element.
+   */
+  Drupal.behaviors.escapeAdmin = {
+    attach() {
+      const $toolbarEscape = $('[data-toolbar-escape-admin]').once('escapeAdmin');
+      if ($toolbarEscape.length && pathInfo.currentPathIsAdmin) {
+        if (escapeAdminPath !== null) {
+          $toolbarEscape.attr('href', escapeAdminPath);
+        }
+        else {
+          $toolbarEscape.text(Drupal.t('Home'));
+        }
+      }
+    },
+  };
+}(jQuery, Drupal, drupalSettings));