I also went to the feedback site and dropped a message. I called Apple Support, and they forwarded me to Engineering. From their response, Engineering apparently thinks it might just be a hardware issue with my specific Mac Pro 😡 Hello? Have they heard of the Internet? This issue is well known and discussed everywhere!
I asked the support rep if there is any way we can ask for a fix, and he said the number of incoming calls/feedback issues about this have to rise to some magic level, and then they'll consider issuing a fix.
They fixed it for the 2009 firmware -- so they obviously know about it.
Apple sucks 🙁