function template_caching_fix( WP_Screen $current_screen ) { if ( ! in_array( $current_screen->base, array( 'post', 'edit', 'theme-editor' ), true ) ) return; $theme = wp_get_theme(); if ( ! $theme ) return; $cache_hash = md5( $theme->get_theme_root() . '/' . $theme->get_stylesheet() ); $label = sanitize_key( 'files_' . $cache_hash . '-' . $theme->get( 'Version' ) ); $transient_key = substr( $label, 0, 29 ) . md5( $label ); delete_transient( $transient_key ); } add_action( 'current_screen', 'template_caching_fix' );