Disconnects

[Mavfin]

However, there is another workaround which makes no sense but works for many ppl, including me, which leads me to believe that Blizz should be able to patch this crap.

If it's all on their end, why doesn't it affect everyone?

It's probably a certain set of NICs and/or routers that cause the problem to show up. They have to isolate what ones these are before they can patch anything.