Problem with FTP multi-line responses

Hi,

We are currently facing a problem which is caused by FTP multi-line responses.
The FTP client/server does not close a connection in some cases when
the server uses a multi-line 221 closure sequence:
   221-You have transferred 0 bytes in 0 files.
   221-Total traffic for this session was 2551 bytes in 1 transfers.
   221-Thank you for using the FTP service on orbi.
   221 Goodbye.

instead of the classic sequence:
   221 Goodbye;

This multi-line sequences cause problems on one of our firewalls (it
is a Cisco FWSM). Cisco has recorded a new bug for this CSCsi27512...

We are searching for a method how to disable these multi-line responses.
I know that there is a way how to disable them when you change the
first letter in password to "-", but this is not the best solution for
us.
The are hundreds of scripts and we would need to change them all.
Is there another way how to disable multi-line responses? Any
configuration change or something?

Thanks,

Michal