🐛 | Drupal core | [upstream] CKEditor 5 accumulates class properties when switch code language in Code Block
I checked it, as did @ReINFaTe. There are 2 'language-*' properties in the class.
I also did not find any existing issue at GitHub.
🐛 | Drupal core | [upstream] CKEditor 5 accumulates class properties when switch code language in Code Block
Yes, need to save the node.
(I forgot to mention it, I fixed the description.)