In my case, the "doesn't subtract 1/2 SE tax", the "doesn't subtract employer retirement contributions" and the "doesn't understand the term net capital gain" bugs have all been fixed.  Mostly I think that's due to the IRS releasing the new regs last week.

I suspect there are still plenty of situations where the math is still broken, but heck, several examples in the new regs are wrong.  Clearly the IRS personnel in charge of proofreading and QC have been deemed non-essential.