Toad creating invalid table script if the table was created with 'XMLTYPE_COL SYS.XMLTYPE DEFAULT' (4241443)

In the Toad editor, create the following table:

CREATE TABLE test
(
  XMLTYPE_COL    SYS.XMLTYPE DEFAULT ''
)

Then go to the Script tab for the newly created table. Toad shows the following statement:

CREATE TABLE test
(
  XMLTYPE_COL  SYS.XMLTYPE Generated Always as ('')
)

Trying to create a table with the "Generated Always as" option leads to the following error:
'ORA-54003: specified data type is not supported for a virtual column'

Toad seems to be generating an invalid create script in this circumstance.

WORKAROUND:
None.

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