Firefox however, still allows you to capture the contents on your own screen that you paid for.

Seems to be breaking many people's note-taking learning flows:

https://www.reddit.com/r/Troubleshooting/comments/m74eis/cant_take_screenshots_of_a_udemy_course_video_in/

https://answers.microsoft.com/en-us/windows/forum/all/prtscr-now-results-in-black-screen-and-no-im-not/aba83281-a928-432a-82c6-bda0cb121002

https://discussions.apple.com/thread/252605325