fix-woocommerce-template-cache.php

<?php
/*
Plugin Name:  Fix WooCommerce Template Cache
Plugin URI:   https://woocommerce.com
Description:  This fixes some issues with WC's template caching on sites that use multiple containers, due to the entire path being cached. If the file does not exist, this script uses default WC logic (copy/pasted) to grab the correct templates.
Version:      1.0.0
Author:       Julien Melissas
Author URI:   https://julienmelissas.com
*/
add_filter('wc_get_template_part', function( $template, $slug, $name ) {
	// If the template does not exist...
	if ( ! file_exists( $template ) ) {
		// Reset $template variable
		$template = false;

		if ( $name ) {
			$template = WC_TEMPLATE_DEBUG_MODE ? '' : locate_template(
				array(
					"{$slug}-{$name}.php",
					WC()->template_path() . "{$slug}-{$name}.php",
				)
			);

			if ( ! $template ) {
				$fallback = WC()->plugin_path() . "/templates/{$slug}-{$name}.php";
				$template = file_exists( $fallback ) ? $fallback : '';
			}
		}

		if ( ! $template ) {
			// If template file doesn't exist, look in yourtheme/slug.php and yourtheme/woocommerce/slug.php.
			$template = WC_TEMPLATE_DEBUG_MODE ? '' : locate_template(
				array(
					"{$slug}.php",
					WC()->template_path() . "{$slug}.php",
				)
			);
		}
	}

	return $template;
}, 3, 99);

add_filter('wc_get_template', function( $template, $template_name, $args, $template_path, $default_path ) {
	// If the template does not exist...
	if ( ! file_exists( $template ) ) {
		$template = wc_locate_template( $template_name, $template_path, $default_path );
	}

	return $template;
}, 5, 99);