The new Web UI will only lists the shows for the first 50 episodes, so if you just added a show with 40 new episodes and the next show has 10 or more new episodes, only these 2 shows will be listed. If you add 50 new episodes from 50 different shows, all 50 will appear. This limit is only for the Dashboard. If you go into the library and set the filter or sort order, all episodes and all shows will be listed.
