WooCommerce Memberships - Does not assign membership when purchasing a product in a secondary language.

Overview of the issue

If you buy a product in second languages, you will notice that it is not assignment of a membership. You can observe this specifically in the “Thank you” page that follows the order, where the expected membership details are absent.

Workaround

Please, make sure of having a full backup of your site before proceeding.

• Open the …/wp-content/plugins/woocommerce-memberships/src/class-wc-memberships-membership-plan.php file.
• Look for line 218.
• Replace:

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  public function get_product_ids() {       if ( null === $this->product_ids ) {         $this->product_ids = get_post_meta( $this->id, $this->product_ids_meta, true );         $this->product_ids = is_array( $this->product_ids ) ? array_unique( array_map( 'absint', $this->product_ids ) ) : [];     }       return $this->product_ids; }

• With:

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  public function get_product_ids() {       if ( null === $this->product_ids ) {         $this->product_ids = get_post_meta( $this->id, $this->product_ids_meta, true );         $this->product_ids = apply_filters( 'wc_memberships_rule_object_ids', $this->product_ids );         $this->product_ids = is_array( $this->product_ids ) ? array_unique( array_map( 'absint', $this->product_ids ) ) : [];     }       return $this->product_ids; }