I just tried to add a YouTube short/reel video URL into the description field, via using the WISIWiG editor in the Digital Products editor for a product, and it's not working. Although the URL I have is correct, when you insert the link, nothing occurs except just a blank box with a large black border around it. I'm showing you a screenshot of what I see below.
This is the link I'm trying to add into the description area for my digital product:
And, this is the Digital Product on Ezycourse (see description area):
And, the screenshot attached is what I see when I save the product. It seems to work if I were to insert a video from the gallery, but NOT from using the insert YT video option.