[MC-11393] Slabs prefer to combine in the same block space instead of replacing snow Created: 09/Mar/13  Updated: 19/May/18  Resolved: 19/May/18

Status: Resolved
Project: Minecraft: Java Edition
Component/s: None
Affects Version/s: Minecraft 1.5, Minecraft 1.7.4, Minecraft 14w26c, Minecraft 1.7.10, Minecraft 14w32d, Minecraft 1.8, Minecraft 1.8.1-pre3, Minecraft 1.8.2-pre6, Minecraft 15w45a, Minecraft 15w47a, Minecraft 1.8.9, Minecraft 1.9 Pre-Release 2, Minecraft 1.10.2, Minecraft 16w42a, Minecraft 1.12.1, Minecraft 1.12.2, Minecraft 17w43a, Minecraft 17w43b
Fix Version/s: Minecraft 18w20c

Type: Bug
Reporter: Dave Assignee: Unassigned
Resolution: Fixed Votes: 8
Labels: double-slab, slab, snow

Attachments: PNG File 2013-03-09_02.03.35.png     PNG File 2013-03-09_02.04.06.png     PNG File 2013-03-09_10.47.03.png     PNG File 2013-03-09_10.47.33.png    
Issue Links:
Duplicate
is duplicated by MC-59605 Slab bug. Resolved
CHK:
Confirmation Status: Confirmed

 Description   

Lower quartz slab jumps up a block space when placed on snow/frost under another lower quartz slab.

What I expected to happen was...:
The quartz slab should stay in the lower block space as a lower slab.

What actually happened was...:
The quartz slab jumps up a block space when placed under another lower quartz slab.

Steps to Reproduce:
1. Place a 1.5 block tall 1x1 pillar of quartz slabs down on showy ground in creative
2. Place snow around the pillar
3. Place a slab extending out from the top slab (they should both be lower slabs)
4. Attempt to place a block under the protruding quartz slab

Pictures attached
2013-03-09_02.03.35.png - Before placing the quartz slab on top of the snow under the protruding quartz slab. Aim at the spot in the picture.

2013-03-09_02.04.06.png - The Result. This will only happen when aiming at the snow underneath. If aiming at the lower half of the double quartz slab block, extra slab does not jump up.



 Comments   
Comment by George Gates [ 19/May/18 ]

Cannot reproduce in 18w20c, not sure when it was fixed.

Comment by George Gates [ 20/Feb/16 ]

Still happening in 1.9-pre2.

Comment by George Gates [ 19/Nov/15 ]

Still happening in 15w47a.

Comment by George Gates [ 05/Nov/15 ]

Still happening in 15w45a.

Comment by qmagnet [ 09/Aug/14 ]

Confirmed for 14w32d

Comment by ggxl [ 28/Jun/14 ]

May be related to the issue where no snow can be placed on (lower) half slabs.

Comment by branza [ 17/Jan/14 ]

Still happens in 1.7.4.

Comment by Kumasasa [ 09/Mar/13 ]

Adjusted summary

Comment by Kumasasa [ 09/Mar/13 ]

Confirmed, but not limited to quartz slabs. Slabs have to be of the same kind, different slabs will place correctly.

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