Bukkit

What steps will reproduce the problem?
1.create a spawer
2.changing Type to e.g. golem or snowman
3.mobs don´t spawn

What is the expected output? What do you see instead?
spawning of golem, ...

What version of the product are you using?
1.9.0.alpha2. Did also not work with previous versions of spawner adjuster.
Problem is beginning from Craftbukkit 1.4.x,

Do you have an error log of what happened?
no

Please provide any additional information below.