It is not possible to use RECNO as an alias (4329983)

It is not possible to use RECNO as an alias.
This works in Toad 9.7 and in SQL Plus but in Toad 10 it fails.

Steps to reproduce the problem:

1] Open up the editor in Toad For Oracle  10.0
2] Paste in the following sql:

select 1 as recno
from dual;

3] Run as a SCRIPT ( ie press F5 ). The error "mData1: Duplicate field name 'RecNo'" appears
4] Run the same select as a STATEMENT ( ie press F9 ) then the error "Duplicate field name 'RecNo'" appears

WORKAROUND:
Use another word as alias

STATUS:
Waiting for fix in a future release of Toad For Oracle