Hi Mahlon,
Thank you for bringing this to our attention. I was able to replicate this on my test account and have created a ticket to have our development team investigate. I will keep you posted on any updates that I receive via this thread. Sorry for the inconvenience.
While we’re on the topic, you may want to consider using an object tag to embed a public page instead of an iframe tag since the iframe tag is not compatible with mobile browsers. Just some food for thought.
-Audisho