Adding span tag does not dismiss language plug-in error if configuration was saved before adding span
Currently you can't configure ckeditor styles for spans without having source editing enabled.
#CKEditor 5
Issues
[upstream] CKE5 Code Blocks missing type around wrapper
Unable to create a new line under code blocks.
Upstream bug: https://github.com/ckeditor/ckeditor5/issues/11852
Provide plugin for CKEditor 5 in Drupal 9.3+
CKEditor 5 not supported yet.
Drupal 10 & CKEditor 5 support
Fix CKEditor CodeSnippet module for CKEditor 5.
Modules
CKEditor iFrame
Embed iframes in CKEditor.
Embedded Content
Themable embedded content.
Similar to CKEditor 5 Template, but has an edit form and changes to display can be made in code.