Error while searching the add account list to the account group (4377974)

When navigating to Security Policy Management >Account Groups > View Group Details > Accounts > Add Account 
When typing in the search field the below error appears:

Invalid filter property - 'AccountNamespace' is not a valid filter property name.

Issue appeared after upgrade to SPP 8.0 LTS

STATUS:

Change Request # 472976 was created to address this issue in a future release of SPP

WORKAROUND:

When searching in the Select Account to Add page, in the search field type Name: then enter the account name, for example:

Name: ExampleAccountName