This seems to be ok for the Blog 2.0 Page Type Post but still failing, also in some sites the CMS is failing and there is a Defect created Defect 784057 : SCA > CMS Related Bundles > Landing Pages > Page Not Found

Yes, that is correct.

Yes, but still showing permission issues for that record

Saw this and wanted to confirm that SC Stock Notification is also affected by the defect? The custom record is locked hence, we are also not able to give or update the permissions.