Editing Wiki block at bottom of large collection if FF jumps to top of collection.

Edit a large collection in FF like: http://next.dev.curriki.org/xwiki/bin/view/GWT/Editor?xpage=plain&page=Coll_jmarks.Betacollectionx&mode=edit

Scroll to the bottom and choose to edit one of the wiki blocks toward the bottom of the collection. When you go into edit mode, the body jumps to the top of the collection and you have to scroll all the way down again to find the element you put into edit mode and begin editing.

This does not seem to occur in IE.