Vimeo iframe being stripped
We've built a template that uses Smart Custom HTML widgets so we can embed YouTube/Vimeo videos based on conditions. We are finding that the iframe code for vimeo is being removed from the landing page once published. We can see the video code in the template, as well as surrounding text, but the video iframe itself is gone.
Is this a known feature/bug with COS? Are iFrames supported within the content editors?