I am having the same issue. I tried all the suggestions. I am using the Youtube block in the new block editor. The site is https://www.ourdownsizedlife.com. Zoom Lite is the theme.
I have pasted the URL that youtube provides when clicking ‘Share’ in the youtube block and, in the editor, it looks fine.
In the preview and live site, there is a space on the page where the video should display. A big white space.
I copied and pasted the URL from the browser that shows when I click the link youtube provides into the URL space of the youtube block. That didn’t work either. I also typed in the URL in WordPress youtube block – and again, nothing. ALL works fine in the editor, but when I update and preview, just white space where the video should be.
What I am seeing is WordPress changing what I type in. In the editor, I can paste or type in the URL from the browser and all looks good. If I right-click on the video as it is playing and click ‘copy the URL link’ from the menu, I get the original URL that youtube provides when clicking Share.
The videos on posts that were done with Classic still work. I really don’t want to go back to Classic editor.
Is this an open issue to be fixed?
