User blog comment:Dopp/Technical Update: October 18, 2011/@comment-1997905-20111022001704

I've recently been having a lot of problems with this (on central too). I've been using Monobook for all of these edits, and I think it's a form problem - simply going back and saving again will still yield a blank page, but clicking edit again, pasting the content, and saving will fix it (see the next edit for both links).