In the Active toolbar configuration for CKEditor, admins have the ability to add two or more rows of buttons. If the video embed button is placed on a row Other than the first row, it is not recognized and error is shown.
"To embed videos, make sure you have enabled the "Video Embed WYSIWYG" filter and dragged the video icon into the WYSIWYG toolbar. For more information read the documentation."
If the button is moved to the first row, everything is ok.

| Comment | File | Size | Author |
|---|---|---|---|
| #4 | 2853926-fix-button-rows-validation-4.patch | 2.49 KB | sam152 |
| ckeditor_row2.png | 113.8 KB | jimconte |
Comments
Comment #2
jimconte commentedComment #3
sam152 commentedGood catch. I'll take a look tomorrow.
Comment #4
sam152 commentedFix attached.
Comment #6
sam152 commentedFails look like they are in HEAD. Opened #2854146: Fix fails in HEAD..
Comment #7
sam152 commented