🇻🇳Vietnam @howto

@slowflyer the issue seem to be in social_mentions.js
It works after I replace CKEDITOR.instances[this.id] with Drupal.CKEditor5Instances.get(this.id)
See more https://www.drupal.org/project/drupal/issues/3388485#comment-15471223 📌 Document in ckeditor5.api.php how to access the CKEditor 5 instance given a DOM element Active