Backup fails to consistently recurse subdirectories. Important files are missed

Norton Security | Norton Internet Security
1

Steps to Reproduce:

 

  1. Using the Backup component of Norton Security Suite I setup a Backup Set with the default settings.
  2. Ran the backup.
  3. I observed that files from "C:\Users\Public\Documents" were missing from the backup.
  4. I then manually added "C:\Users\Public\Documents" with an explicit Include.
  5. Ran the backup.
  6. I observed that only one folder from "C:\Users\Public\Documents" was added to the backup.
  7. I then manually added a subfolder "C:\Users\Public\Documents\CustomFolder" to the Include list.
  8. Ran the backup.
  9. Observed that "C:\Users\Public\Documents\CustomFolder" was finally included in the backup and that it was recursed as expected.

Why was "C:\Users\Public\Documents" and its subfolder not included in the default settings?

 

Why did Backup still fail to include the subfolders when "C:\Users\Public\Documents" was explicitly Included?

 

Test System: Norton Security Suite version 20.2.0.19 as distributed by Comcast, Microsoft Windows 8 Enterprise 64-bit.