I’m experiencing the same issue. The default embed code provided for the Video Element disables the byline and portrait, which is what I want. Unfortunately when the element renders, it shows anyway.
If I use the <iframe> embed code provided by Vimeo (which is identical), and drop it into a standard text block, it shows correctly.
The big drawback to using the embed code over the Video element is that it isn’t responsive, and doesn’t scale properly as the page is resized.
Can you please investigate why the Video element in the Page Builder isn’t rendering properly?