Error on clicking Content Page button over Edit Product Config Item Content screen

Steps to regenerate:
1) Go to Catalog -> Configuration
2) Search Config item and go to detail page of that item.
3) Now got to Content screen
4) Go to edit ant Product Config Item Content from the list. Create New Product Config Item Content if not available.
5) In this page Click on "Content Page" button.
It will throw error:
Unknown request [gotoContent]; this request does not exist or cannot be called directly.