Error message "Number of rows removed from this list by Security constraints" on a list or "No record found" on form view is shown when users trying to view records that are in a scoped application.
Cause by the system having specific table level read ACL(s) on the scope application.
1) Verify that the scoped application has "Application administration" field checked. When this field is check it tells the system to follow ACLs within that scoped application rather than the ACLs on global scope.
2) Identify which table level read ACLs are present for the scope application in question and make necessary changes to allow users access.
An example of such ACL would be:
Name: Email Client Canned Messages [sys_email_canned_message] None
Application: Human Resources: Core