BROKEN Premium Content List - What else is broken now?

Well, first of all, there are two more Premium content doors, the Door of Life and Death and the shop door from the Savvy Seller collection.
Secondly, there was a problem with an ordinary arch in the past, too, as you might remember. The (free) Cellar Arch used to crash games. Therefore I wouldn't be surprised at all if amjoie was right.