I'm currently running Version 111.0.1661.36 (Official build) dev (64-bit) of the chromium edge browser, while using a different chromium based windows browser this site: MSNBC News - Breaking News and News Today | Latest News displays the live video feed properly without any issues. So I'm wondering as to why the edge browser won't do the same ?
As you may know Dev is under development and testing and I request you to report this issue using the Feedback option, so the Microsoft Edge team would be able to investigate it.
