.../modules/ckeditor5/src/SmartDefaultSettings.php | 24 +++++++++++-----------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/core/modules/ckeditor5/src/SmartDefaultSettings.php b/core/modules/ckeditor5/src/SmartDefaultSettings.php
index 8687aa78dd..fd4214092c 100644
--- a/core/modules/ckeditor5/src/SmartDefaultSettings.php
+++ b/core/modules/ckeditor5/src/SmartDefaultSettings.php
@@ -414,25 +414,25 @@ private function addToolbarItemsToMatchHtmlElementsInFormat(FilterFormatInterfac
               // use a leading and trailing dash.
               if (!is_array($attributes_config)) {
                 $non_specific_attribute = $attributes_config ? '-attributes-any-' : '-attributes-none-';
-                $plugin_candidates[$tag_name][$non_specific_attribute][$surplus_score] = $plugin_id;
+                $plugin_candidates[$tag_name][$non_specific_attribute][$plugin_id] = $surplus_score;
                 continue;
               }
 
               // With specific attribute restrictions: array.
               foreach ($attributes_config as $attribute_name => $attribute_config) {
                 if (!is_array($attribute_config)) {
-                  $plugin_candidates[$tag_name][$attribute_name][$attribute_config][$surplus_score] = $plugin_id;
+                  $plugin_candidates[$tag_name][$attribute_name][$attribute_config][$plugin_id] = $surplus_score;
                 }
                 else {
                   foreach ($attribute_config as $allowed_attribute_value => $allowed_attribute_value_config) {
-                    $plugin_candidates[$tag_name][$attribute_name][$allowed_attribute_value][$allowed_attribute_value_config][$surplus_score] = $plugin_id;
+                    $plugin_candidates[$tag_name][$attribute_name][$allowed_attribute_value][$allowed_attribute_value_config][$plugin_id] = $surplus_score;
                   }
                 }
               }
 
               // If this plugin supports unneeded attributes, it still makes a
               // valid candidate for supporting the HTML tag.
-              $plugin_candidates[$tag_name]['-attributes-none-'][$surplus_score] = $plugin_id;
+              $plugin_candidates[$tag_name]['-attributes-none-'][$plugin_id] = $surplus_score;
             }
           }
         }
@@ -461,8 +461,8 @@ private function addToolbarItemsToMatchHtmlElementsInFormat(FilterFormatInterfac
             // Sadly no plugin found for this tag + unspecific attribute.
             continue;
           }
-          ksort($plugin_candidates[$tag_name][$key]);
-          $selected_plugin_id = reset($plugin_candidates[$tag_name][$key]);
+          asort($plugin_candidates[$tag_name][$key]);
+          $selected_plugin_id = array_keys($plugin_candidates[$tag_name][$key])[0];
           $selected_plugins[$selected_plugin_id][$key][$tag_name] = NULL;
           continue;
         }
@@ -478,8 +478,8 @@ private function addToolbarItemsToMatchHtmlElementsInFormat(FilterFormatInterfac
               // Sadly no plugin found for this tag + attribute + config.
               continue;
             }
-            ksort($plugin_candidates[$tag_name][$attribute_name][$attribute_config]);
-            $selected_plugin_id = reset($plugin_candidates[$tag_name][$attribute_name][$attribute_config]);
+            asort($plugin_candidates[$tag_name][$attribute_name][$attribute_config]);
+            $selected_plugin_id = array_keys($plugin_candidates[$tag_name][$attribute_name][$attribute_config])[0];
             $selected_plugins[$selected_plugin_id][$attribute_name][$tag_name] = $attribute_config;
             continue;
           }
@@ -489,8 +489,8 @@ private function addToolbarItemsToMatchHtmlElementsInFormat(FilterFormatInterfac
                 // Sadly no plugin found for this tag + attr + value + config.
                 continue;
               }
-              ksort($plugin_candidates[$tag_name][$attribute_name][$allowed_attribute_value][$allowed_attribute_value_config]);
-              $selected_plugin_id = reset($plugin_candidates[$tag_name][$attribute_name][$allowed_attribute_value][$allowed_attribute_value_config]);
+              asort($plugin_candidates[$tag_name][$attribute_name][$allowed_attribute_value][$allowed_attribute_value_config]);
+              $selected_plugin_id = array_keys($plugin_candidates[$tag_name][$attribute_name][$allowed_attribute_value][$allowed_attribute_value_config])[0];
               $selected_plugins[$selected_plugin_id][$attribute_name][$tag_name][$allowed_attribute_value] = $allowed_attribute_value_config;
               continue;
             }
@@ -504,8 +504,8 @@ private function addToolbarItemsToMatchHtmlElementsInFormat(FilterFormatInterfac
         // plugin that can support `<blockquote>`, then only the `cite` attribute
         // needs to be made possible using the `SourceEditing` plugin.
         if ($goals[$tag_name] === 'tag' && isset($plugin_candidates[$tag_name]['-attributes-none-'])) {
-          ksort($plugin_candidates[$tag_name]['-attributes-none-']);
-          $selected_plugin_id = reset($plugin_candidates[$tag_name]['-attributes-none-']);
+          asort($plugin_candidates[$tag_name]['-attributes-none-']);
+          $selected_plugin_id = array_keys($plugin_candidates[$tag_name]['-attributes-none-'])[0];
           $selected_plugins[$selected_plugin_id]['-attributes-none-'][$tag_name] = NULL;
         }
       }