Search results switch template on Page 2

Sorry about the delay in writing back to you.

Could you try to deactivate the Infinite Scroll feature under Jetpack > Settings in your dashboard, and let me know if the problem then disappears?

Thanks for your reply!

Yes — if I disable Infinite Scroll, the problem disappears.

Thanks for giving it a try. What happens if you switch to one of the default themes, like Twenty Sixteen, for a few minutes? Does the problem remain?

Twenty Sixteen displays all the search results the same.

Alright. Could you check the render function you’ve created when declaring support for Infinite Scroll, and add a conditional checking for is_search and then loading the template you use to display search results? That should solve your issue.

I’m not sure what you mean?

This is the code I put in my functions file to enable Infinite Scroll:

	 /*
	 * Enable infinite scroll
	 */
	 add_theme_support( 'infinite-scroll', array(
		'container' => 'main',
		'footer' => 'page',
	 ) );

I would suggest reviewing this support doc:
https://jetpack.com/support/infinite-scroll/

You’ll find a parameter named render that you can use to force the search result page to use the right template.

I hope this helps.

Sorry — I’m afraid I’m not enough of a coder to understand.

Sorry about that. You can check how we do things for other themes to understand how this works:
https://github.com/Automattic/jetpack/blob/master/modules/infinite-scroll/themes/twentysixteen.php#L20-L32

Here’s what I put in my functions file, but the problem remains, I’m afraid:

	 /*
	 * Enable infinite scroll
	 */
	 add_theme_support( 'infinite-scroll', array(
		'container' => 'main',
		'render'    => 'jetpack_sentinel_infinite_scroll_render',
		'footer' => 'page',
	 ) );

/**
 * Custom render function for Infinite Scroll.
 */
function jetpack_sentinel_infinite_scroll_render() {
	while ( have_posts() ) {
		the_post();
		if ( is_search() ) {
			get_template_part( 'template-parts/content', 'search' );
		} else {
			get_template_part( 'template-parts/content', get_post_format() );
		}
	}
}

Does get_template_part( 'template-parts/content', 'search' ); seem to load the right template now?

No, it still loads the wrong one starting from Page 2.

Could you double check and make sure your search template loop is available at wp-content/themes/yourtheme/template-parts/content-search.php, or update the function to load the right template? In your first post you mentioned get_template_part( 'content', 'search' );, so your search template file might be at wp-content/themes/yourtheme/content-search.php.

Yes, I realized that and changed it to get_template_part( 'content', 'search' ); after I posted — but no effect.

At this point it might be useful to use the Debug Bar to check what templates are loaded on each page, and make sure you are all set there. That should clarify things a bit.