Access Denied on Fullscreen in IE11

We are using Kaltura video. I was not involved in the implementation so not familiar with the exact product name. Anyway we are simply taking the iframe embed code (running at provided by Kaltura and embedding it in a SharePoint page (running at Full Screen icon on the lower right does not work in IE. It gives an access denied error in the IE debugger. From what I have read I’m pretty sure it is a zone problem and the embed iframe operating in a different domain than the parent window. Chrome and Edge work fine. Has anyone else seen this?