This is silly to ask but I have run out of options to resolve this. Somehow, System Admins are not able to view the cases created by Community Portal Users. They can view every other case
In production they are able to see but in Sandbox they are not. The only thing that I did in Sandbox is uninstall an unmanaged package related to communities. Am sure the package is not being used and this is only thing that broke. The package name is 'Community'
Am wondering how a package could impact the record visibility of cases for Sys Admins.
I am able to see the record under Cases tab but when I click on it, it shows insufficient privileges. When I query the record in workbench, it says "INVALID_CROSS_REFERENCE_KEY"