I have an issue seeing embedded YouTube videos. It seems that URLs using "youtu.be" now appear as several lines of blank space. They worked before.
https://youtu.be/7Ub0UbhDGDE
https://www.youtube.com/watch?v=7Ub0UbhDGDE
https://youtu.be/7Ub0UbhDGDE
https://www.youtube.com/watch?v=7Ub0UbhDGDE