FIX: frequent posters wasn't displaying the correct information

lib/topic_view.rb

@@ -277,7 +277,9 @@ class TopicView
 
   def post_counts_by_user
     @post_counts_by_user ||= begin
-      return {} if @posts.blank?
+      post_ids = unfiltered_posts.pluck(:id)
+
+      return {} if post_ids.blank?
 
       sql = <<~SQL
         SELECT user_id, count(*) AS count_all
@@ -289,7 +291,7 @@ class TopicView
          LIMIT 24
       SQL
 
-      Hash[Post.exec_sql(sql, post_ids: @posts.pluck(:id)).values]
+      Hash[Post.exec_sql(sql, post_ids: post_ids).values]
     end
   end