BUG - WC_Product_Appointment_Rule_Manager::check_availability_rules_against_date

The code have multiple returns [1099] and [1114] causing newly added woocommerce_appointments_is_date_appointable filter never to execute.
Cheers,
Mattias
/**
     * Check a date against the availability rules
     *
     * @version 4.0.0  Added woocommerce_appointments_is_date_appointable filter hook
     * @version 2.7    Moved to this class from WC_Product_Appointment
     *                 only apply rules if within their scope
     *                 keep appointment value alive within the loop to ensure the next rule with higher power can override
     * @version 2.6    Removed all calls to break 2 to ensure we get to the highest
     *                 priority rules, otherwise higher order/priority rules will not
     *                 override lower ones and the function exit with the wrong value.
     *
     *
     * @param  WC_Product_Appointment $appointable_product
     * @param  int $staff_id
     * @param  int $check_date timestamp
     * @return bool available or not
     */
    public static function check_availability_rules_against_date( $appointable_product, $check_date, $staff_id, $get_capacity = false, $appointable = null ) {
        if ( is_null( $appointable ) ) {
            $appointable = $appointable_product->get_default_availability();
        }

        // Rules.
        $rules    = $appointable_product->get_availability_rules( $staff_id );

        // Capacity.
        $capacity = $appointable_product->get_available_qty( $staff_id );

        #var_dump($capacity);

        foreach ( $rules as $rule ) {
            if ( self::does_rule_apply( $rule, $check_date ) ) {
                // passing $appointable into the next check as it overrides the previous value
                $appointable = self::check_timestamp_against_rule( $check_date, $rule, $appointable, $capacity, $get_capacity );
            }
        }

        return $appointable;

        /**
         * Is date appointable hook.
         *
         * Filter allows for overriding whether or not date is appointable. Filters should return true
         * if appointable or false if not.
         *
         * @since 4.0.0
         *
         * @param bool $appointable available or not
         * @param WC_Product_Appointment $appointable_product
         * @param int $staff_id
         * @param int $check_date timestamp
         */
        return apply_filters( 'woocommerce_appointments_is_date_appointable', $appointable, $appointable_product, $check_date, $staff_id, $get_capacity );
    }
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