When a regular user (Non-Admin) is attempting to logout of the instance using the top right dropdown option, the instance does not log the user out.
Instead the user will be redirected to a page within the instance with error: "The page you are looking for could not be found"
The Installation Exit 'LogoutRedirect' being active was the root cause of the issue. It will overlap Installation Exit 'Logout' which is active and should remain active.
After setting active to 'false' for Installation Exit 'LogoutRedirect', the regular user was able to successfully logout