Double-clicking a link? It does the exact same for me. Once it fails to load, the Go Advanced button doesn't work either. But I believe it used to. But the box was still dead in the advanced view as well. Something about editing entirely that was broken for me. And it still is apparently as I am unable to edit my last post. Double-clicking just loaded the same dead box in place of my post and none of the links under it do anything

Edit: Yeah, right clicking and/or middle clicking and opening to a new tab effectively puts it in advanced edit mode for me. And the box is definitely dead there. However, if I right click and open the edit in a new window, it seems to work