Pinned uncategorized topics span the title and category column in topic lists

app/assets/javascripts/discourse/controllers/topic_list_item_controller.js

@@ -10,7 +10,6 @@ Discourse.TopicListItemController = Ember.ObjectController.extend({
   needs: ['discoveryTopics'],
 
   canStar: Em.computed.alias('controllers.discoveryTopics.currentUser.id'),
-  hideCategory: Em.computed.alias('controllers.discoveryTopics.hideCategory'),
   bulkSelectEnabled: Em.computed.alias('controllers.discoveryTopics.bulkSelectEnabled'),
 
   checked: function(key, value) {
@@ -27,6 +26,16 @@ Discourse.TopicListItemController = Ember.ObjectController.extend({
     return selected.contains(topic);
   }.property('controllers.discoveryTopics.selected.length'),
 
+  titleColSpan: function() {
+    // Uncategorized pinned topics will span the title and category column in the topic list.
+    return (!this.get('controllers.discoveryTopics.hideCategory') &&
+             this.get('model.isPinnedUncategorized') ? 2 : 1);
+  }.property('controllers.discoveryTopics.hideCategory', 'model.isPinnedUncategorized'),
+
+  hideCategory: function() {
+    return this.get('controllers.discoveryTopics.hideCategory') || this.get('titleColSpan') > 1;
+  }.property('controllers.discoveryTopics.hideCategory', 'titleColSpan'),
+
   actions: {
     toggleStar: function() {
       this.get('model').toggleStar();

app/assets/javascripts/discourse/models/topic.js

@@ -260,6 +260,10 @@ Discourse.Topic = Discourse.Model.extend({
 
   },
 
+  isPinnedUncategorized: function() {
+    return this.get('pinned') && this.get('category.isUncategorizedCategory');
+  }.property('pinned', 'category.isUncategorizedCategory'),
+
   /**
     Clears the pin from a topic for the currently logged in user
 

app/assets/javascripts/discourse/templates/list/topic_list_item.js.handlebars

@@ -10,7 +10,7 @@
   {{/if}}
 {{/if}}
 
-<td class='main-link clearfix'>
+<td class='main-link clearfix' {{bind-attr colspan="titleColSpan"}}>
   {{topicStatus topic=this}}
   {{{topicLink this}}}
   {{#if unread}}