Few issues in 3.5 which make it unusable.
First the metabox in the menu settings page always has the "loading spinner" as if it was in the process of triggering ajax. It shows on page load and never goes away, although it doesn't seem to stop items from being added to the menu.
The real issue is the parent level page URL is weird and doesn't seem to work.
If the menu generated is
-- Product X
-- Porduct Y
Clicking the top level Products menu should take you to the Products archive page. However it doesn't, instead it forwards me to Product X.