Issues in Approval Rule: GetManager() function do not return direct manager username.

Summary:

Hello Team,

Our client need to have a specific approval for performance goals where an employee can have a dotted line and a manager.
When Employee only have manager, only manager get PMS notification.
When Employee has both dotted and line manager, only Dotted Manager should get notification and approval.

Following Doc ID 2026603.1 lead to the use of GetManager() which works but instead of retrieving the username of the employee's manager, it get the MANAGER of the employee's manager.

Example consider the following username.
Employee username = gNancy
Direct Line Manager username = fClancy
Line Manager of the Line Manager username = vVenkia