Embed within iframe (Refused to frame 'https://new.express.adobe.com/' because an ancestor viola…)

[@getflourish]

I’m trying to use the embed within an app that’s rendered in an iframe. I added the embedding domain to the allowed domains, but still get this error:

> Refused to frame 'https://new.express.adobe.com/' because an ancestor violates the following Content Security Policy directive: "frame-ancestors 'self' [REDACTED].com".