Individual Job Posts Not Displaying Properly

We have a recurring formatting problem on our site — while the overall jobs list and previews of individual listings display properly, published job listings don’t. Instead, they appear just like any other blog post, and neither company information nor the “apply” button appear.

Here’s what an individual job post looks like when I preview it:

Here’s what that same job post looks like after publication:

So, how do I fix this? The support documents on template overrides and single posts aren’t helpful, as they focus on editing the plugin’s templates, rather than getting the plugin’s templates to work with my site’s theme.

In the alternative, what specific themes or families of themes are known to be compatible with the plugin? This jobs board is only a small part of a larger website for a nonprofit, so we’re not interested in the themes on the WP Job Manager site.