Set Connection to Active, but it's using Passive

I can't understand what's going wrong. I've set my favourites connection to be Active as my FTP server will not accept passive connections (on my home PC being a NAT'd router, with Port 20 and 21 forwarded).

When I open the favourite it instantly starts running in passive mode. I can see nowhere to change this default behaviour.

Please help, worked fine in previous versions.