I apologize I hadn't been aware of the embed tool in the Rich Text toolbar. I'm using Prismic-Vue plugin and was able to render a Youtube embed just fine, but when I went to embed a CodePen from CodePen.io which renders fine on my Medium posts, Prismic shows only null as content in my GraphQL queries.
At first I thought this was a rendering issue with my app, but while Prismic is just returning null for my rich-text field, it doesn't seem there is anything i can do to render the rich-text field with this oEmbed.
Has Prismic encountered any problems with CodePen embeds from other users?
In the meantime is there a way I can drop iframes into a rich text field? Currently i'm having to use a work around scraping the page for a shortcode and replace it with an iframe which is seeming pretty unreliable and hacky.