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MC-143906

Illagers form in less than 100 blocks of village and on half slabs!

I am in a village that I have improved. I have fenced in the entire village and every building either has a staircase, glass block, or half slab for the length of the roof. However illagers are forming on top of half slabs. I cannot believe this is intentional, as you would essentially be making villages almost indefensable.  Which side note. We need 2 high fence gates if we are going to have mobs that easily fire ranged attacks at villagers over top of 1 high fences...

Including villages and raid data. Not sure if that will help. 

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Have you made sure they are half slabs in the bottom and not the top side?

I m not sure wether it is intended or not but i ve found that on some occasions raids spawned Inside of the village ( which is surrounded by a 2 blocks tall wall ). I still haven't found the exact point they come from but there isnt any place where the wall can jumped over by any npc. Also the boss bar disappears on death during a raid

Also not only do Illagers form on top of the buildings I have half slabbed but the new trader villager and his llamas do as well. 

Yes all slabs are bottom half slabs.  I had to add ugly fences across the top of all of the buildings...

@ @unknown Yes they do form INSIDE the village. They are on top of the buildings. I think there may be an issue with there being vertical height settings for villages so illagers can form vertically (y axis) outside of the village boundaries while still actually being INSIDE the village from an x and z perspective? 
 
 

Is this still an issue in the latest 1.14 development snapshot?

Still in 19w13b, they keep spawning on my village only bottom half slabbed roof. I've made sure they are bottom, too.

I went to creative and built a 3 high wall connecting the buildings in a default desert village and torched the entire thing (golem inside the wall) and left a recorder on overnight. There were no illagers spawning inside the absolute bounds of the village. I think it would be useful if there was a way to see the bounds of the village so that you don't spend hours building a village up only to have the most deadly mob the village can face form inside while you are underground mining resources... Without that players are kind of bound to the type of thing I did which is linking the physical buildings together with ridiculous zig zagging walls.

Please check if this is still an issue for you in 1.16 Release Candidate 1 or later.

13rimstone

(Unassigned)

Unconfirmed

Minecraft 19w05a, Minecraft 19w13b

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