Why does Gospel Doctrine appear twice?

I have noticed that the Gospel Doctrine class appears twice:

1 - As a separate organization in the list of organizations
2 - As a class under the Sunday School organization

Does anyone know why this is happening?

I'm only seeing it under Sunday School. It is possible there was a temporary issue. Have you done a full refresh of the page (Ctrl+F5)?

I contacted the Global Service Center and they determined that there was a problem with the organizational listing for my Ward. In less than 48 hours, they had resolved the problem and the organizational listing is now normal. A BIG thank you to the Global Service Center.