Partial is not refresh on UI

[grepruby]

On sync_update @item, I got that partial is rendering ( User debugger/binding.pry ) but not update on UI level. Like When my item is update then that partial is called but not update on browser page.

Controller :-

def create
stuff for updating an item object.......
sync_update @item
end

View :-

<% @top_bidding_items.each do |item| %>
<%= sync partial: 'top_item_bids', resource: item %>
<% end %>

When I put 'binding.pry" in "top_item_bids" I got that page when item is updated, but doesn't reflect on view.