Unwanted HTML added to rectangle element iframe after save

Hi after adding html to a rectangle element and closing the rectangle element adds come unwanted html (="") AFTER data-vimeo-defer. Is there any way to prevent this???

Desired code:

<iframe loading="lazy" data-vimeo-defer src="https://player.vimeo.com/video/6460154?h=5db3a36f50&amp;badge=0&amp;autopause=0&amp;player_id=0&amp;app_id=58479" frameborder="0" allow="autoplay; fullscreen; picture-in-picture" allowfullscreen="" style="position:absolute;top:0;left:0;width:100%;height:100%;" title=""></iframe>

Rectangle AFTER I close and re-open:

<iframe loading="lazy" data-vimeo-defer="" src="https://player.vimeo.com/video/6460154?h=5db3a36f50&amp;badge=0&amp;autopause=0&amp;player_id=0&amp;app_id=58479" frameborder="0" allow="autoplay; fullscreen; picture-in-picture" allowfullscreen="" style="position:absolute;top:0;left:0;width:100%;height:100%;" title=""></iframe>

That normally means you have some syntax errors in your property construction

Hype automatically cleans up HTML5, but the cleaning bit is a bit overly-orthodox in that it will supply values to any attributes. There's not really a way around this, but it generally shouldn't cause problems.

When I paste in the "desired code", the video seems to work fine for me. Do you have repro steps where it does not work?