Hello @brookslo ,
I am sorry this has not yet been addressed! I have run some tests to see if the video would embed into the instructions information and it seems to be working for me. One thing I did notice is that the Test Student could not view the video. Is this what you were running into specifically when the embedded Studio video was not playing? If so, it looks like the Test Student may not be able to view it in this case. This is likely due to the double third-party tool layering since Canvas Studio and New Quizzes are considered third-party tools even though Canvas owns and manages each of them.
Please let us know if you have any more questions on this or further details!!