Youtube embed iframe full screen option is not working in IE 11 . I have done some troubleshooting and below are some key facts.
Full screen option works if I change the compatibility mode to Edge. But SP Seattle masterpage defaults to IE 10 compatibility mode and full screen does not work
I have tried allowfullscreen attribute but no luck with IE 11.
The full screen option works in Chrome and other browsers. 4.Another interesting observation from a user is that this used to work before.
- Tried same thing in SharePoint online and same result in IE 11.
Have anyone of you experienced this problem in SharePoint lately.