Noticed this error in my console when using the CDN hosted version of TinyMCE from //cdn.tinymce.com/4/tinymce.min.js
Access to Font at 'https://cdn.tinymce.com/4/skins/lightgray/fonts/tinymce.woff' from origin 'https://cdn.tinymce.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://s.codepen.io' is therefore not allowed access. (line breaks inserted)
When using cdnjs's version of the library, no such error is generated. I made a little test pen. You can swap out the CDN library links via comments http://codepen.io/willthemoor/pen/gLzJWQ?editors=1010
Are other folks seeing the same error? If so, is addressing this on the team's roadmap?