Precondition:
At least one form exists.

Steps:
1. Create landing page.
2. Add Form block.
3. Select form from precondition.
4. Publish.
5. Go to Content/Content Structure
6. In created landing page go to Relations tab.

Actual result:
Added form is not visible in Relations in Related content.
In form, created landing page is not visible in Reverse relations

Expected result:
Relations are created properly.