"New" links broken - going to #/new instead of #new

Greetings,

Some redirect has recently broken all the "#new" links which used to take me to the new replies in a thread.

They should append "#new" onto my URL, but it is getting rewritten to "#/new" which doesn't match the anchor and I end up at the beginning of the thread instead.

I can manually edit the URL but after it takes me to the proper place, it rewrites itself again as "#/new"

I am using Firefox...Firefox 25.0, looks like.  (if that matters!)