FIX: New counts were taking into account muted categories

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

@@ -136,6 +136,10 @@ Discourse.TopicTrackingState = Discourse.Model.extend({
   countNew: function(category_name){
     return _.chain(this.states)
       .where({last_read_post_number: null})
+      .where(function(topic) {
+        return topic.notification_level === null ||
+               topic.notification_level >= Discourse.Topic.NotificationLevel.TRACKING;
+      })
       .where(function(topic){ return topic.category_name === category_name || !category_name;})
       .value()
       .length;

app/models/topic_tracking_state.rb

@@ -133,6 +133,10 @@ class TopicTrackingState
               JOIN group_users gu ON gu.user_id = u.id AND cg.group_id = gu.group_id
               WHERE c2.read_restricted )
           )
+          AND NOT EXISTS( SELECT 1 FROM category_users cu
+                          WHERE cu.user_id = u.id AND
+                               cu.category_id = topics.category_id AND
+                               cu.notification_level = #{CategoryUser.notification_levels[:muted]})
 
 SQL