Vob.passthrough/subpicture/direct render to video?

I’m using DVDFab Platinum

When using the vob.passthrough profile, the only choice available for subpicture (on the configure screen) is “Extract to idx/sub file”. I don’t see an option for “Direct render to video”. Has this always been the case or has something changed recently? I don’t remember getting separate idx/sub files before but, I could be wrong.