Add .js-filter-submit when needed

app/views/shared/issuable/_filter.html.haml

@@ -46,7 +46,7 @@
             = dropdown_tag("Milestone", options: { title: "Assign milestone", toggle_class: 'js-milestone-select js-extra-options js-filter-submit js-filter-bulk-update', filter: true, dropdown_class: "dropdown-menu-selectable dropdown-menu-milestone", placeholder: "Search milestones", data: { show_no: true, field_name: "update[milestone_id]", project_id: @project.id, milestones: namespace_project_milestones_path(@project.namespace, @project, :json), use_id: true } })
 
           .filter-item.inline.labels-filter
-            = render "shared/issuable/label_dropdown", classes: ' js-filter-bulk-update js-multiselect ', extra_options: false, show_footer: false, extra_options: false, data_options: {  field_name: "update[label_ids]", show_no: false, show_any: false, use_id: true }
+            = render "shared/issuable/label_dropdown", classes: ' js-filter-bulk-update js-multiselect ', extra_options: false, filter_submit: false, show_footer: false, extra_options: false, data_options: {  field_name: "update[label_ids][]", show_no: false, show_any: false, use_id: true }
 
           = hidden_field_tag 'update[issues_ids]', []
           = hidden_field_tag :state_event, params[:state_event]

app/views/shared/issuable/_label_dropdown.html.haml

 - extra_options = local_assigns.fetch(:extra_options, true)
+- filter_submit = local_assigns.fetch(:filter_submit, true)
 - show_footer = local_assigns.fetch(:show_footer, true)
 - data_options = local_assigns.fetch(:data_options, {})
 - classes = local_assigns.fetch(:classes, '')
 - dropdown_data = {toggle: 'dropdown', field_name: 'label_name[]', show_no: "true", show_any: "true", selected: params[:label_name], project_id: @project.try(:id), labels: labels_filter_path, default_label: "Label"}
 - dropdown_data.merge!(data_options)
 - classes << ' js-extra-options ' if extra_options
+- classes << ' js-filter-submit ' if filter_submit
 
 - if params[:label_name].present?
   - if params[:label_name].respond_to?('any?')
     - params[:label_name].each do |label|
       = hidden_field_tag "label_name[]", label, id: nil
 .dropdown
-  %button.dropdown-menu-toggle.js-label-select.js-filter-submit.js-multiselect{class: classes, type: "button", data: dropdown_data}
+  %button.dropdown-menu-toggle.js-label-select.js-multiselect{class: classes, type: "button", data: dropdown_data}
     %span.dropdown-toggle-text
       = h(multi_label_name(params[:label_name], "Label"))
     = icon('chevron-down')