Hi all.
We´re getting an issue in content editor when we try to add and iframe tag iside a richtext. We figured out about this after releasing to version 15. I´ve just checked and I was working on version 14.
The behavior is the following.
In a RichText, click in the “source” tab, and paste an iframe:
After that, if you save the document, or just change to the normal view, the source is gone.
In the console we have the richtext configuration to allowing “iframe”
I can also reproduce it in the bloomreach demo project (v15): https://cms.demo.onehippo.com/
Best regards.