[MC-6872] Upon creating the wither, It leaves ghost blocks

I tried to summon a wither and the blocks were left behind. Confirmed to work on easy difficulty and up.

What I expected to happen was...:
The wither would spawn and the soul sand blocks would disappear.

What actually happened was...:
The wither spawned and left the blocks behind.

Steps to Reproduce:
1. Summon a wither
2. Blocks will stay until right-clicked or until you re-enter the world

Linked issues

is duplicated by 12

MC-7886 Cheap Wither-Boss totem Resolved

MC-8195 Wither spawning don't delete blocks, what "made" Wither Resolved

MC-8489 Creating Wither in 13w04a create some ghost block Resolved

MC-8656 Wither Boss Still Glitches (Nether) Resolved

MC-9106 Spawning Wither Resolved

7 more links

relates to 1

MC-3169 Wither In Peaceful spawns very glitchy Resolved

Attachments

Comments 26

Kevin f 2013-01-10T19:44:29Z

I tried that and a wither didn't spawn at all. The blocks just stayed

user-4cf05 2013-01-10T19:45:29Z

You need to be on at least easy mode. Not peaceful

Kevin f 2013-01-10T20:04:41Z

herp derp. I forgot. Retested and it did leave blocks.

Tails 2013-01-12T00:08:11Z

Unable to reproduce.

kumasasa 2013-01-19T11:27:57Z

Reopened.

16 more comments

_Black_Viper_ 2013-01-28T12:02:17Z

Added a screenshot to confirm this bug, to show how to reproduce it and to prove it's caused by the facing direction.
This was in 13w04a using Windows 7 Java 7.

connor byers 2013-01-29T14:28:25Z

seems for me to work in the overworld but not in the nether. this is a major bug and it will be horrible if it DOES NOT GET FIXED before 1.5 which I am predicting will be after 13w06a/b or whatever letter

_Black_Viper_ 2013-01-29T18:52:15Z

Added a couple of screenshots to prove this bug can be reproduced in all dimensions.

Talven81 2013-01-29T18:57:01Z

Able to reproduce in 13w04a. The wither skulls disappear, and the right arm soul sand block disappears.

Update: Upon logging out and back in, prior to the wither exploding, the blocks disappear.

Tails 2013-01-29T19:09:37Z

Partial regression of MC-5729.

shufboyardee 2013-02-01T19:49:15Z

The arms must be directed West-East (regardless the Wither always faces south). The one Soul Sand that disappears will be the one underneath the last head you place.

My long-shot bet is that this is misbehaving code, meant to solve the following ambiguous situation: Stack two Soul Sands, and around the top Soul Sand, attach four Soul Sand arms. On those four arms, place heads. You'll see that if you place one in the center, the game has to choose which one to activate, the West-East totem, or the North-South totem. It always activates the North-South totem correctly, and leaves intact the West-East arms. It seems to correspond, which is the only reason I bring it up.

shufboyardee 2013-02-07T19:57:17Z

also 13w06a

connor byers 2013-02-15T13:44:05Z

Get EVRYONE TO VOTE IT UP!!!!

connor byers 2013-02-15T13:45:39Z

also, ive been adding this bug to the NOTABLE BUGS section on the wiki's snapshots posts. I really need this fixed before 1.5 and We might only get one more snapshot before 1.5.

Courtland Manley 2013-02-20T20:06:12Z

In reference to my comment:

"This is still able to be done in 13w07a. However, i could only get it o happen when facing either north, or south, and building the wither facing me(i.e. I stand facing north and build the wither with the skulls facing south) Ill Attach screenshots of it happening."

Courtland Manley 2013-02-20T20:06:18Z

This is still able to be done in 13w07a. However, i could only get it o happen when facing either north, or south, and building the wither facing me(i.e. I stand facing north and build the wither with the skulls facing south) Ill Attach screenshots of it happening.

user-4cf05 2013-02-23T04:46:15Z

Tested and does this with 1.4.7 also

Gregory Hamilton 2013-02-28T18:22:31Z

Just tested this. Still happens in 13w09b.

connor byers 2013-03-05T13:58:58Z

tested in 13w09c and 13w10a...

damnit

connor byers 2013-03-05T14:00:17Z

Its a directional bug. And it sucks in servers that have Mob griefing OFF.

_zombiehunter 2013-03-05T20:09:09Z

Why is this weird bug still not fixed? Does Mojang never create a Whiter when testing their own game?

MC User 2013-03-06T14:03:06Z

Tested in 13w10b, bug is still working

connor byers 2013-03-06T14:42:05Z

@zombie hunter. THATS WHAT I'M SAYING
one OFFICIAL version and 15 damn snapshots and I've tweeted this to them 300 times and they reply to something else I said while trying to get them to see it.

DAMNNN

and pre release tomorrow!

I shouldnt have to make sure I face the arms North to South

connor byers 2013-03-06T14:44:18Z

when you make it faceing East to west it keeps all the blocks EXCEPT the last wither head placed and the soul sand it was put on.

all 3 dimentions and all three difficulties and all gamemodes.

_zombiehunter 2013-03-06T15:28:10Z

Yep, still happens in 13w10b. Such weird and easy-to-fix bugs need more upvotes !!!

connor byers 2013-03-08T14:24:52Z

YES!!! IT'S FIXED!!!