Джек Николсон был прав! Вы должны убедиться, что ваш style.css содержит полный комментарий. Пример ниже:
Ранее мой был:
/*
Theme Name: Acadata
Theme URI: https://www.factorypattern.co.uk
Description: Custom
Author: Factory Pattern
Version: 1
License: GNU General Public License
License URI: license.txt
*/
Затем я изменил его на ниже, и теперь я могу видеть все мои шаблоны.
/*
Theme Name: Acadata
Theme URI: https://factorypattern.co.uk/
Description: Custom
Author: Factory Pattern
Author URI: https://factorypattern.co.uk/
Description: The Acadata theme for WordPress.
Version: 1.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Tags: black, brown, orange, tan, white, yellow, light, one-column, two-columns, right-sidebar, flexible-width, custom-header, custom-menu, editor-style, featured-images, microformats, post-formats, rtl-language-support, sticky-post, translation-ready
Text Domain: acadata
This theme, like WordPress, is licensed under the GPL.
Use it to make something cool, have fun, and share what you've learned with others.
*/