Firefox – YouTube video won’t load on the product page tab

I have tracked this down to Firefox.

I have an attribute: video_link that I fill out with a YouTube video embed link:

If I try to have the video display in a product tab in a phtml, the video will not display and there are no errors.

< ?php
    $_product = $block->getProduct();
    $videolink = $_product->getVideoLink();
?>

      

If I manually add the embed code the video will display:

I also have a Google API key set in the configuration->catalog->catalog->product video

How can I get the video to display in a product tab?