Order total dose not update in checkout page or review page when update quantity in ajax cart block.

i need help to fix this bug. in commerce kickstart it was ok! but in default commerce sites have bug, and i don't know why!

i fix my problem with this rules :

{ "rules_update_order_total" : {
    "LABEL" : "Update Order Total",
    "PLUGIN" : "reaction rule",
    "OWNER" : "rules",
    "TAGS" : [ "mimalef70" ],
    "REQUIRES" : [ "rules", "entity" ],
    "ON" : { "commerce_line_item_update" : [] },
    "DO" : [ { "entity_save" : { "data" : [ "commerce-line-item:order" ] } } ]
  }
}