diff --git a/core/modules/ckeditor5/js/ckeditor5.admin.es6.js b/core/modules/ckeditor5/js/ckeditor5.admin.es6.js
index e913b4d8ec1655da5e5d8a2d31c51d1bd4af1430..dfa136b9098f2f5267d37facf704a5455de81ae9 100644
--- a/core/modules/ckeditor5/js/ckeditor5.admin.es6.js
+++ b/core/modules/ckeditor5/js/ckeditor5.admin.es6.js
@@ -3,7 +3,7 @@
  * Provides admin UI for the CKEditor 5.
  */
 
-((Drupal, drupalSettings, $, JSON, once, Sortable, { tabbable }) => {
+((Drupal, drupalSettings, $, JSON, once, Sortable) => {
   const toolbarHelp = [
     {
       message: Drupal.t(
@@ -584,7 +584,10 @@
       // that can catch blur-causing events before the blur happens. If the
       // tooltip is hidden before the blur event, the outline will disappear
       // correctly.
-      once('safari-focus-fix', '.ckeditor5-toolbar-item').forEach((item) => {
+      once(
+        'safari-focus-fix',
+        document.querySelectorAll('.ckeditor5-toolbar-item'),
+      ).forEach((item) => {
         item.addEventListener('keydown', (e) => {
           const keyCodeDirections = {
             9: 'tab',
@@ -676,7 +679,9 @@
       // information can be retrieved after AJAX rebuilds.
       once(
         'ui-state-storage',
-        '#filter-format-edit-form, #filter-format-add-form',
+        document.querySelector(
+          '#filter-format-edit-form, #filter-format-add-form',
+        ),
       ).forEach((form) => {
         form.setAttribute('data-drupal-ui-state', JSON.stringify({}));
       });
@@ -694,32 +699,7 @@
         const activeTab = getUiStateStorage(`${id}-active-tab`);
         if (activeTab) {
           setTimeout(() => {
-            const activeTabLink = document.querySelector(activeTab);
-            activeTabLink.click();
-
-            // Only change focus on the plugin-settings-wrapper element.
-            if (id !== 'plugin-settings-wrapper') {
-              return;
-            }
-            // If the current focused element is not the body, then the user
-            // navigated away from the vertical tab area and is somewhere else
-            // within the form. Do not change the current focus.
-            if (document.activeElement !== document.body) {
-              return;
-            }
-            // If the active element is the body then we can assume that the
-            // focus was on an element that was replaced by an ajax command.
-            // If that is the case restore the focus to the active tab that
-            // was just rebuilt.
-            const targetTabPane = document.querySelector(
-              activeTabLink.getAttribute('href'),
-            );
-            if (targetTabPane) {
-              const tabbableElements = tabbable(targetTabPane);
-              if (tabbableElements.length) {
-                tabbableElements[0].focus();
-              }
-            }
+            document.querySelector(activeTab).click();
           });
         }
 
@@ -738,8 +718,12 @@
       };
 
       once(
-        'maintainActiveVerticalTab',
-        '#plugin-settings-wrapper, #filter-settings-wrapper',
+        'plugin-settings',
+        document.querySelector('#plugin-settings-wrapper'),
+      ).forEach(maintainActiveVerticalTab);
+      once(
+        'filter-settings',
+        document.querySelector('#filter-settings-wrapper'),
       ).forEach(maintainActiveVerticalTab);
 
       // Add listeners to maintain focus after AJAX rebuilds.
@@ -1038,4 +1022,4 @@
       });
     },
   };
-})(Drupal, drupalSettings, jQuery, JSON, once, Sortable, tabbable);
+})(Drupal, drupalSettings, jQuery, JSON, once, Sortable);
diff --git a/core/modules/ckeditor5/js/ckeditor5.admin.js b/core/modules/ckeditor5/js/ckeditor5.admin.js
index fe4b8ed7e2ffbc6f900cff621a609df037652de7..0c66220203eb03ef9579e894a3056178f542d8ab 100644
--- a/core/modules/ckeditor5/js/ckeditor5.admin.js
+++ b/core/modules/ckeditor5/js/ckeditor5.admin.js
@@ -37,8 +37,7 @@ function _defineProperties(target, props) { for (var i = 0; i < props.length; i+
 
 function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
 
-(function (Drupal, drupalSettings, $, JSON, once, Sortable, _ref) {
-  var tabbable = _ref.tabbable;
+(function (Drupal, drupalSettings, $, JSON, once, Sortable) {
   var toolbarHelp = [{
     message: Drupal.t("The toolbar buttons that don't fit the user's browser window width will be grouped in a dropdown. If multiple toolbar rows are preferred, those can be configured by adding an explicit wrapping breakpoint wherever you want to start a new row.", null, {
       context: 'CKEditor 5 toolbar help text, default, no explicit wrapping breakpoint'
@@ -326,10 +325,10 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
     attach: function attach(context) {
       once('ckeditor5-admin-toolbar', '#ckeditor5-toolbar-app').forEach(function (container) {
         var selectedTextarea = context.querySelector('#ckeditor5-toolbar-buttons-selected');
-        var available = Object.entries(JSON.parse(context.querySelector('#ckeditor5-toolbar-buttons-available').innerHTML)).map(function (_ref2) {
-          var _ref3 = _slicedToArray(_ref2, 2),
-              name = _ref3[0],
-              attrs = _ref3[1];
+        var available = Object.entries(JSON.parse(context.querySelector('#ckeditor5-toolbar-buttons-available').innerHTML)).map(function (_ref) {
+          var _ref2 = _slicedToArray(_ref, 2),
+              name = _ref2[0],
+              attrs = _ref2[1];
 
           return _objectSpread({
             name: name,
@@ -370,7 +369,7 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
         });
         render(container, selected, available, dividers);
       });
-      once('safari-focus-fix', '.ckeditor5-toolbar-item').forEach(function (item) {
+      once('safari-focus-fix', document.querySelectorAll('.ckeditor5-toolbar-item')).forEach(function (item) {
         item.addEventListener('keydown', function (e) {
           var keyCodeDirections = {
             9: 'tab',
@@ -415,7 +414,7 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
         return form.hasAttribute('data-drupal-ui-state') ? JSON.parse(form.getAttribute('data-drupal-ui-state'))[property] : null;
       };
 
-      once('ui-state-storage', '#filter-format-edit-form, #filter-format-add-form').forEach(function (form) {
+      once('ui-state-storage', document.querySelector('#filter-format-edit-form, #filter-format-add-form')).forEach(function (form) {
         form.setAttribute('data-drupal-ui-state', JSON.stringify({}));
       });
 
@@ -425,26 +424,7 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
 
         if (activeTab) {
           setTimeout(function () {
-            var activeTabLink = document.querySelector(activeTab);
-            activeTabLink.click();
-
-            if (id !== 'plugin-settings-wrapper') {
-              return;
-            }
-
-            if (document.activeElement !== document.body) {
-              return;
-            }
-
-            var targetTabPane = document.querySelector(activeTabLink.getAttribute('href'));
-
-            if (targetTabPane) {
-              var tabbableElements = tabbable(targetTabPane);
-
-              if (tabbableElements.length) {
-                tabbableElements[0].focus();
-              }
-            }
+            document.querySelector(activeTab).click();
           });
         }
 
@@ -458,7 +438,8 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
         });
       };
 
-      once('maintainActiveVerticalTab', '#plugin-settings-wrapper, #filter-settings-wrapper').forEach(maintainActiveVerticalTab);
+      once('plugin-settings', document.querySelector('#plugin-settings-wrapper')).forEach(maintainActiveVerticalTab);
+      once('filter-settings', document.querySelector('#filter-settings-wrapper')).forEach(maintainActiveVerticalTab);
       var selectedButtons = document.querySelector('#ckeditor5-toolbar-buttons-selected');
       once('textarea-listener', selectedButtons).forEach(function (textarea) {
         textarea.addEventListener('change', function (e) {
@@ -526,8 +507,8 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
     }
   };
 
-  Drupal.theme.ckeditor5SelectedButtons = function (_ref4) {
-    var buttons = _ref4.buttons;
+  Drupal.theme.ckeditor5SelectedButtons = function (_ref3) {
+    var buttons = _ref3.buttons;
     return "\n      <ul class=\"ckeditor5-toolbar-tray ckeditor5-toolbar-active__buttons\" data-button-list=\"ckeditor5-toolbar-active-buttons\" role=\"listbox\" aria-orientation=\"horizontal\" aria-labelledby=\"ckeditor5-toolbar-active-buttons-label\">\n        ".concat(buttons.map(function (button) {
       return Drupal.theme.ckeditor5Button({
         button: button,
@@ -536,8 +517,8 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
     }).join(''), "\n      </ul>\n    ");
   };
 
-  Drupal.theme.ckeditor5DividerButtons = function (_ref5) {
-    var buttons = _ref5.buttons;
+  Drupal.theme.ckeditor5DividerButtons = function (_ref4) {
+    var buttons = _ref4.buttons;
     return "\n      <ul class=\"ckeditor5-toolbar-tray ckeditor5-toolbar-divider__buttons\" data-button-list=\"ckeditor5-toolbar-divider-buttons\" role=\"listbox\" aria-orientation=\"horizontal\" aria-labelledby=\"ckeditor5-toolbar-divider-buttons-label\">\n        ".concat(buttons.map(function (button) {
       return Drupal.theme.ckeditor5Button({
         button: button,
@@ -546,8 +527,8 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
     }).join(''), "\n      </ul>\n    ");
   };
 
-  Drupal.theme.ckeditor5AvailableButtons = function (_ref6) {
-    var buttons = _ref6.buttons;
+  Drupal.theme.ckeditor5AvailableButtons = function (_ref5) {
+    var buttons = _ref5.buttons;
     return "\n      <ul class=\"ckeditor5-toolbar-tray ckeditor5-toolbar-available__buttons\" data-button-list=\"ckeditor5-toolbar-available-buttons\" role=\"listbox\" aria-orientation=\"horizontal\" aria-labelledby=\"ckeditor5-toolbar-available-buttons-label\">\n        ".concat(buttons.map(function (button) {
       return Drupal.theme.ckeditor5Button({
         button: button,
@@ -556,11 +537,11 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
     }).join(''), "\n      </ul>\n    ");
   };
 
-  Drupal.theme.ckeditor5Button = function (_ref7) {
-    var _ref7$button = _ref7.button,
-        label = _ref7$button.label,
-        id = _ref7$button.id,
-        listType = _ref7.listType;
+  Drupal.theme.ckeditor5Button = function (_ref6) {
+    var _ref6$button = _ref6.button,
+        label = _ref6$button.label,
+        id = _ref6$button.id,
+        listType = _ref6.listType;
     var visuallyHiddenLabel = Drupal.t("@listType button @label", {
       '@listType': listType !== 'divider' ? listType : 'available',
       '@label': label
@@ -568,11 +549,11 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
     return "\n      <li class=\"ckeditor5-toolbar-item ckeditor5-toolbar-item-".concat(id, "\" role=\"option\" tabindex=\"0\" data-drupal-selector=\"ckeditor5-toolbar-button\" data-id=\"").concat(id, "\" data-label=\"").concat(label, "\" data-divider=\"").concat(listType === 'divider', "\">\n        <span class=\"ckeditor5-toolbar-button ckeditor5-toolbar-button-").concat(id, "\">\n          <span class=\"visually-hidden\">").concat(visuallyHiddenLabel, "</span>\n        </span>\n        <span class=\"ckeditor5-toolbar-tooltip\" aria-hidden=\"true\">").concat(label, "</span>\n      </li>\n    ");
   };
 
-  Drupal.theme.ckeditor5Admin = function (_ref8) {
-    var availableButtons = _ref8.availableButtons,
-        dividerButtons = _ref8.dividerButtons,
-        activeToolbar = _ref8.activeToolbar,
-        helpMessage = _ref8.helpMessage;
+  Drupal.theme.ckeditor5Admin = function (_ref7) {
+    var availableButtons = _ref7.availableButtons,
+        dividerButtons = _ref7.dividerButtons,
+        activeToolbar = _ref7.activeToolbar,
+        helpMessage = _ref7.helpMessage;
     return "\n    <div aria-live=\"polite\" data-drupal-selector=\"ckeditor5-admin-help-message\">\n      <p>".concat(helpMessage.join('</p><p>'), "</p>\n    </div>\n    <div class=\"ckeditor5-toolbar-disabled\">\n      <div class=\"ckeditor5-toolbar-available\">\n        <label id=\"ckeditor5-toolbar-available-buttons-label\">").concat(Drupal.t('Available buttons'), "</label>\n        ").concat(availableButtons, "\n      </div>\n      <div class=\"ckeditor5-toolbar-divider\">\n        <label id=\"ckeditor5-toolbar-divider-buttons-label\">").concat(Drupal.t('Button divider'), "</label>\n        ").concat(dividerButtons, "\n      </div>\n    </div>\n    <div class=\"ckeditor5-toolbar-active\">\n      <label id=\"ckeditor5-toolbar-active-buttons-label\">").concat(Drupal.t('Active toolbar'), "</label>\n      ").concat(activeToolbar, "\n    </div>\n    ");
   };
 
@@ -600,4 +581,4 @@ function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _d
       });
     }
   };
-})(Drupal, drupalSettings, jQuery, JSON, once, Sortable, tabbable);
\ No newline at end of file
+})(Drupal, drupalSettings, jQuery, JSON, once, Sortable);
\ No newline at end of file