Why does 'Generate DB DOC' in SQL Developer fill my filesystem with Flashback data

Question

SQL Developer : 2.1.1.64

When I generate DB doc on my tables my file system fills up with files like _Flashback.html.

How can I prevent this?

Who on earth might be interested in this data as part of a database documentation?

IMHO this should not be included in 'DB Doc'

This data is displayed :

Operation   VERSIONS_XID    VERSIONS_STARTSCN   VERSIONS_ENDSCN     ROW_ID  NOW_SCN

Original    null    null    null    oracle.sql.ROWID@10c59ca    77837230355
Original    null    null    null    oracle.sql.ROWID@1dae16a    77837230355
Original    null    null    null    oracle.sql.ROWID@104fb34    77837230355
Original    null    null    null    oracle.sql.ROWID@81371          77837230355
Original    null    null    null    oracle.sql.ROWID@349826     77837230355

Regards, Rob