Cockatrice Double Faced Help.

Can anyone help me out with how to use double faced cards in Cockatrice? For instance Delver of Secrets. The day side works just fine but when I flip it I get the standard MTG back.

I'm using a Mac and this is the only problem I've ran into.

Thanks ahead of time for the help.

Edit: If anyone feels like playing my username on Cockatrice is the same as here.