BUG #7767: pg_ctl allows postgres running under administrator's privilege

The following bug has been logged on the website:

Bug reference: 7767
Logged by: yangyd
Email address: yangyd(at)cn(dot)fujitsu(dot)com
PostgreSQL version: 9.2.2
Operating system: Windows 7 Professional
Description:

I found that it's possible to start the postgres process as the
administrator of the system using `pg_ctl start -D data`, while `postgres -D
data` will complain "Execution of PostgreSQL by a user with administrative
permissions is not
permitted."

I confirmed with Process Explorer that the postgres process created by
pg_ctl does running under the administrator account.

Is this behavior intended?
Thanks.