Affects Version/s: Minecraft 15w41b
Fix Version/s: None
Put the summary of the bug you're having here
What I expected to happen was...:
A normal working spawner
Describe what you thought should happen here
The Skeletons should just spawn a walk around, and stop spawning after like 4 spawned
What actually happened was...:
There were more than 50 skeletons not moving in a room , causing huge fps drops.
Steps to Reproduce:
1.Find a spawner room.