Apply labels only if we picked a label from the dropdown

app/assets/javascripts/issues-bulk-assignment.js.coffee

@@ -7,11 +7,25 @@ class @IssuableBulkActions
       @issues = @getElement('.issues-list .issue')
     } = opts
 
+    # Save instance
+    @form.data 'bulkActions', @
+
+    @disableWillUpdate()
+
     @bindEvents()
 
     # Fixes bulk-assign not working when navigating through pages
     Issuable.initChecks();
 
+  enableWillUpdate: ->
+    @toggleWillUpdate(true)
+
+  disableWillUpdate: ->
+    @toggleWillUpdate(false)
+
+  toggleWillUpdate: (enable)->
+    @willUpdateLabels = if enable? then enable else not @willUpdateLabels
+
   getElement: (selector) ->
     @container.find selector
 
@@ -87,6 +101,7 @@ class @IssuableBulkActions
         add_label_ids     : []
         remove_label_ids  : []
 
+    if @willUpdateLabels
       @getLabelsToApply().map (id) ->
         formData.update.add_label_ids.push id
 

app/assets/javascripts/labels_select.js.coffee

@@ -319,6 +319,8 @@ class @LabelsSelect
 
         multiSelect: $dropdown.hasClass 'js-multiselect'
         clicked: (label) ->
+          _this.enableBulkLabelDropdown()
+
           if $dropdown.hasClass('js-filter-bulk-update')
             return
 
@@ -377,3 +379,8 @@ class @LabelsSelect
       label_ids.push $("#issue_#{issue_id}").data('labels')
 
     _.intersection.apply _, label_ids
+
+  enableBulkLabelDropdown: ->
+    if $('.selected_issue:checked').length
+      issuableBulkActions = $('.bulk-update').data('bulkActions')
+      issuableBulkActions.enableWillUpdate()