How do you mean? seems to work ok here.
Blitz's anti-aliasing toggle doesn't work on some cards that support anti-aliasing, and when anti-aliasing is forced it sometimes doesn't work as well. As such, this means that it isn't working 'right', it's just working in some cases. In my case, I've only gotten anti-aliasing to work about 3 times in Blitz.
I'd like to see some nice smooth lines rather than these ugly-as-heck aliased edges.