WordPress 7.1 will ship with changes to the HTML structure of post list tables in the WordPress admin. These are the changes:The checkbox column changes from a row header <th> to a regular table cell <td>. Plugins that use CSS or JavaScript to target specific <th> or <td> elements in WordPress admin post list tables are the ones at risk. If compatibility has not been confirmed, use a staging site to test whether the plugin breaks the WordPress 7.1 admin post list. Code After Change<tr> <td class="check-column"> <input type="checkbox" name="post[]" value="123"> </td> <th scope="row" class="title column-title column-primary page-title" aria-label="Hello world!