Put the summary of the bug you're having here
What I expected to happen was...: Mobs not to spawn from a lit spawner so I could create a mob farm
Describe what you thought should happen here
What actually happened was...:Mobs spawned in the blocks and jumped out to attack me
Describe what happened here
Steps to Reproduce:
1. Find a dungeon
2. Cover spawner in torches
3. Watch as the mobs spawn in nearby blocks and jump out to assault your face
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Alright, thanks. I hope they can fix this soon...mob farms will become a pain to make....
I noticed it when I was going by my established mobfarm based with the spawner. I broke into it and spotted the problem then was "hey wait, what the hell the lights are on..."