Your add on is a marvelous relief for my nerves, but doesn't work well in some sites and breaks some pages that have forms; this, one, for example, in:
http://www.goteo.org/contact
the "Mensaje" (Message) field disappears, but works well if I just disable I don't care about cookies. It doesn't happen in all the pages with forms, the majority don't experience any issue, but it does in many. The bug is present too in the version for Firefox Android.