When creating a WebContent structure one can add child fields to other existing fields. This usually works great but if you add a document & media field and add children like simple text field as a child, the children will not be rendered when creating a web content with this structure.
Steps to reproduce:
1. Create new structure "TestStructure"
2. Add field type document&media to the form
3. Add field type text as a child to the document&media field
4. Save structure
5. Create new web content by using Add>TestStructure buttons
The text field is missing now.
Except for this I didn't find anything related: http://www.liferay.com/de/community/forums/-/message_boards/message/38028447