Show labels widget on issuable sidebar if project has only group labels

app/controllers/concerns/issuable_actions.rb

@@ -2,7 +2,7 @@ module IssuableActions
   extend ActiveSupport::Concern
 
   included do
-    before_action :labels, only: [:new, :edit]
+    before_action :labels, only: [:show, :new, :edit]
     before_action :authorize_destroy_issuable!, only: :destroy
     before_action :authorize_admin_issuable!, only: :bulk_update
   end

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

@@ -107,7 +107,7 @@
                   = dropdown_content do
                     .js-due-date-calendar
 
-      - if issuable.project.labels.any?
+      - if @labels && @labels.any?
         - selected_labels = issuable.labels
         .block.labels
           .sidebar-collapsed-icon.js-sidebar-labels-tooltip{ title: issuable_labels_tooltip(issuable.labels_array), data: { placement: "left", container: "body" } }