I wanted to test the grouped product feature. So i created a main product with several child products. Group the child to the main item and gave them a price (all 99 euro's).
After that i tested and only my images show up. The rest: the description, grouped products, add-to-cart button etc. (including the admin bar) is not showing.
This is the URL for the variable product:
This is the URL for the grouped product: