Description: The issue only can be reproduced on ee-6.2.x.
Steps to reproduce:
1. Add a Web Content Structure
2. Create a Web Content Template for the Structure
3. Create a Web Content Article with your Structure.
4. Create a Basic Web Content
5. Use the "Browse by Structure" functionality and select "Basic Web Content"
Actual Behavior: The list is empty although a Basic Web Content does exist.
Expected Behavior: The content is shown in the list as expected.