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MC-131021

When placing water or lava on top of a top slab, the slab is waterlogged / the lava is not placed

The bug

When you place a bucket of water on a top slab, the water is placed inside the slab instead of above.

Example

Here is an example in video: https://www.youtube.com/watch?v=5gcZIO6C74k

Additional information

This bug causes that you cannot place lava over a top slab.

Linked issues

MC-131140 Put water on up-slad. MC-131843 Unable to place water on top or against slabs/stairs MC-131894 Lava unplaceable on top half-slabs, side of double half-slabs or signs MC-134891 Placing water on a solid face of a partial block (eg. stairs and slabs) fills the block instead of placing water above it MC-136241 Stairs ignore direction of water being placed on top MC-141418 Water buckets on top of slabs MC-141800 Placing water on top of a top-half slab puts water into slab instead of on top of slab MC-142310 Weird Water glitch MC-144434 Placing water on a top-level half slab creates source block inside block instead of on top MC-150677 Water Bug MC-158626 Water does not appear on slabs MC-160439 Lava can't be placed directly on steps or other places, it always floats above it MC-165806 water in the slab MC-167555 Water Being Placed Through Water MC-173262 Water buckets do not work consistently MC-176344 When placing water on top of a slab that's on the upper half of a block the water will be placed underneath MC-176530 Minecraft Water Glitch MC-193608 Can't place water on top a slab

Attachments

Comments

ItsMartin

Confirming for 1.13-pre1.

I suspect the water aspect of this might be intentional? For lava though, and for double slabs. it makes no sense.

Also, this seems to be related to MC-126906.

muzikbike

Affects 1.13-pre2

muzikbike

Affects 1.13-pre3

CreeperMagnet_

Can confirm for 1.13-pre4.

muzikbike

Double slab bit fixed in 1.13-pre5, top slab issue remains.

muzikbike

As of 1.13-pre6, only the top line applies.

muzikbike

Affects 18w30b

muzikbike

Still affecting 1.13.1's full release. Also, why is the middle statement not crossed out?

muzikbike

18w47b, only the top line remains valid

muzikbike

Top line affects 18w49a, everything else remains fixed

SpaghettiGoat

Video recording of water and top-half slab bug: https://www.youtube.com/watch?v=5gcZIO6C74k

violine1101

This ticket should probably be split up, so that we have one ticket for lava not being able to be placed, and one ticket for waterlogging while looking at the top face of a top slab / bottom face of a bottom slab.

bugsbugsbugs

Lava can be placed without any issue in 1.16.2

bugsbugsbugs

This is probably intended, that just is how waterlogging works. If you right click a waterloggable block with a water bucket, the block will be waterlogged and if you place it by aiming at the corresponding side, it will also be waterlogged. I don’t think, this is a bug.

Daniel Whaley

(Unassigned)

Confirmed

Block states

lava, slab, water, waterlogged-blocks

Minecraft 1.13-pre1, Minecraft 1.13-pre2, Minecraft 1.13-pre3, Minecraft 1.13-pre4, Minecraft 1.13-pre5, ..., 21w10a, 21w11a, 21w13a, 21w14a, 21w15a

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