Hi,
as you probably know with the new APEX 20.2 the CKEditor 4 got deprecated and now the Rich Text Editor uses a newer version.
I found some trouble when loading existing HTML from the DB to the editor. In my case the problem appears when loading HTML with embedded iframes (YouTube videos). In CKEditor 4 at least a placeholder would apper, but here nothing shows up.
Example of non working HTML:
<p><iframe src="https://www.youtube.com/embed/tgbNymZ7vqY" width="100%" height="315" frameborder="0" allowfullscreen="allowfullscreen"></iframe></p>
Is there any workaround?