Fullscreened embedded iframe does not report width and height correctly: https://connect.microsoft.com/IE/feedback/details/838286/ie-11-incorrectly-reports-dom-element-sizes-in-fullscreen-mode-when-fullscreened-element-is-within-an-iframe Added workaround.
Fullscreened embedded iframe does not report width and height correctly: https://connect.microsoft.com/IE/feedback/details/838286/ie-11-incorrectly-reports-dom-element-sizes-in-fullscreen-mode-when-fullscreened-element-is-within-an-iframe
Added workaround.

h5p/h5p-interactive-video