- [x] This feature was introduced in CKEditor 4.8, so we will need to update it first (#3355).
https://ckeditor.com/docs/ckeditor4/latest/guide/dev_balloontoolbar.html
This feature was introduced in CKEditor 4.8. It is provided through the Balloon Toolbar plugin that is not included in any CKEditor preset available from the Download site and needs to be added to your custom build with online builder.
This plugin adds a possibility to display a toolbar, pointing at a particular element in the editor content.

Recent comments
@yorkshirepudding, In the end I fixed it by deleting the config/active folder contents, copying the config/staging/ files into config/active, importing the database again and clearing the caches...
Importing the staged config throws an error: another field with the same name already exists
Thanks, I have to go out now, I will try later on and report back
Importing the staged config throws an error: another field with the same name already exists
Hi Francis. Yes, what config do you have in staging for it? You might have configs like: field.field.field_video_embed field.instance.node.page....
Importing the staged config throws an error: another field with the same name already exists