CreatureSpawner for non-living entity types broken in 1.5.2

Anything's changed? The following code used to work:

Code:

     
worldBlock.setType(Material.MOB_SPAWNER);
BlockState genericBlockState = worldBlock.getState();
((CreatureSpawner)genericBlockState).setSpawnedType(EntityType.PRIMED_TNT);
genericBlockState.update();

Now all it does is to create the spawner, and I can see it "attempting" to create the entity, but nothing happens. Any ideas?

Normal mobs still work though.

 

Actually, all "non-living" entities appear to be affected. Tried with arrows, boats, minecarts, etc.

 

You can't spawn all entities from spawners like that.

Only animals and monsters work that way, AFAIK. using the code right now and it works fine

 

Prior to 1.5, the same code was working fine for primed tnt for example.