Preview box for embedded link not working

Please don’t post in the Alpha/Beta forum unless you’re actually testing the alpha/beta version of WordPress (not a plugin or a theme). Also, once WordPress has released a version, it’s not appropriate to post in alpha/beta and you should post in the Fixing WordPress forum:

https://www.ads-software.com/support/forum/how-to-and-troubleshooting

This post has been moved out for you.

When I am in the block editor, the preview box is generated for the embedded post, however when I go to the published post, the preview box does not appear – only a hyperlink appears.

Just to be certain here, you’re embedding links back to your own posts?

My apologies for starting the discussion in the wrong place. Yes, I am embedding links back to my own posts because I want to highlight related content on the site. I realize there is a “related posts” section that comes with the Jetpack (and my purchased theme), but I do not have control over which posts are highlighted there, nor their number.

A similar topic https://www.ads-software.com/support/topic/internal-links-preview-in-content-box/
references this ticket: https://core.trac.www.ads-software.com/ticket/52768