I just exited the zone and went back in. Near the first bottom, scarecrow, there's supposed to be a crate or pumpkin. But it wasn't there. And then the beast wolf banghest or whatever. There's supposed to something there too. Near the first grim Spector or whatever, there is usually a crate or pumpkin there too.

When you exit a zone, the respawn timers get reset. Its as if you defeated all the Named/placeolders and opened all the pumpkins and crates all at once. They will show up int he same amount of time as if you had defeated them yourself.