When changing a mobspawner's EntityType, it won't update.

Code being used:

CreatureSpawner spawner = (CreatureSpawner) block.getState();
spawner.setSpawnedType(newSpawnerType);

Calling spawner.update(); doesn't make a difference either.

To be clear once more this IS on blockplaceevent.

And we tried scheduling the task 1 tick later, didn't work