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MC-135703

Mobs don't see/path over bottom slabs

mobs are not walking over bottom slabs with no block under them.

What I expected to happen was...:
mobs to walk over bottom slabs/see them as solid ground.

What actually happened was...:
mobs don't see bottom slabs at all, will try to jump up walls with a bottom slab on top or will see a gap where a bottom slab is.

Steps to Reproduce:
make a bridge made out of bottom slabs and get a mob to path over it, (zombie following you in survival mode, villager running from zombie, villager pathing to hungry villager) and the mob wont walk over the bottom slabs.

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Uriel Salischiker

Mobs see bottom slabs as a full block, so they will try to jump it

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but not walk on it? they are trying to jump up walls that have slabs on them and aren't walking over bridges made from them.

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i've uploaded a video of a villager not able to get away from a zombie and the zombie not chasing the villager when it got knocked onto the slabs. 

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and another where the zombies make it across but very strangely, they spin allot and wander back and forth, they eventually make it across but not fast enough to fit in 10mb at my settings

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Dang it, I thought I searched properly.

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(Unassigned)

Unconfirmed

Minecraft 1.13

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