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I have created a CPT using register_post_type with the following args:

  "label" => $aLabels['name'],
  "labels" => $aLabels,
  "description" => "",
  "public" => true,
  "publicly_queryable" => true,
  "show_ui" => true,
  "show_in_rest" => false,
  "rest_base" => "",
  "has_archive" => true,
  "show_in_menu" => true,
  "exclude_from_search" => true,
  "capability_type" => "post",
  "map_meta_cap" => true,
  "hierarchical" => false,
  "rewrite" => array("slug" => $slug, "with_front" => true),
  "query_var" => true,
  "menu_icon" => site_url('/wp-content/uploads/icon.png'),
  "supports" => array("title", "editor", "excerpt", "custom-fields"),
  "taxonomies" => array('court', 'rating', 'categorisation'),

Everything works perfectly except pagination on the first page of the admin post list i.e.

http://dev.caselaw.co.za/wp-admin/edit.php?post_type=case

does not display at all.

From page 2 onwards, it is perfect.

http://dev.caselaw.co.za/wp-admin/edit.php?post_type=case&paged=2

I have Googled the world and can’t find a similar problem, never mind a solution! Can anyone make a suggestion?

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  • Any plugins/themes interfering? – birgire Sep 12 '17 at 8:45
  • Thanks for having a look, but unfortunately, that's not it - tried with Twenty Fifteen and only the plugin which creates the CPT. – NettSite Sep 13 '17 at 10:18
  • Strange, does the cpt slug matter? Any errors? Does it work for other post types, like post and page? – birgire Sep 13 '17 at 13:48
  • Extra strangeness - I checked pages and posts, and pages work fine, but posts have the same issue as the cases (the CPT). If I deactivate the cases plugin, posts work fine, so there is clearly something wrong with my plugin. – NettSite Sep 14 '17 at 15:14
  • Yes sounds like the plugin is causing it, but it's hard to say what it is.Try e.g. to remove stuff from it (in small steps) until it works again? – birgire Sep 14 '17 at 16:41
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Thank you for your help - I have found the offending function.

The plugin is meant to manage about 400,000 case files and provide a fast search. In order to manage the search on the front-end of the site, I need to manipulate the number of results found for any given search, so I added a filter at "found_posts" to do that, and that was breaking the pagination on the backend.

I added "if(is_admin()) return;" to that function and everything is hunky dory.

If you are interested in seeing a fast search in action, look for "dismissal" or something on http://dev.caselaw.co.za/search-page/

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