Steps to recreate:
1.) Start with a fresh 6.1.20 Bundle
2.) Create some new Web Content in the 6.1.20 Bundle
3.) Upgrade 6.1.20 to 6.2.0 M5
Browse to Web Content in the Control Panel in the upgraded 6.2.0 M5 site.
Notice that Home is missing the content created in 6.1.20.
If you Search and Edit the Content it will then show up in Home.