[MC-1202] Mobs spawn and then quickly despawn in peaceful. Looks like the "ender-porting-out-of-water" effect. Created: 29/Oct/12  Updated: 02/Mar/14  Resolved: 11/Jun/13

Status: Resolved
Project: Minecraft: Java Edition
Component/s: None
Affects Version/s: Minecraft 1.4.1, Minecraft 1.4.2, Minecraft 1.4.6, Minecraft 1.4.7, Snapshot 13w05b, Snapshot 13w09a, Snapshot 13w09b, Snapshot 13w10b, Minecraft 1.5, Snapshot 13w11a, Minecraft 1.5.1
Fix Version/s: Snapshot 13w24a

Type: Bug
Reporter: Meta Assignee: EvilSeph (Warren Loo)
Resolution: Fixed Votes: 8
Labels: None

Issue Links:
Duplicate
is duplicated by MC-10593 Wither spawner not working correct Resolved
is duplicated by MC-12480 server mob glitch Resolved
is duplicated by MC-14544 Zombies spawn in peaceful Resolved
is duplicated by MC-50012 Slime spawn when there not meant to Resolved
is duplicated by MC-3586 Updated multiplayer server to 1.4.5. ... Resolved
CHK:
Confirmation Status: Confirmed

 Description   

When difficulty "peaceful" is enabled (EDIT: in multiplayer!), mobs still spawn but then quickly despawn (also that causes the "skeleton shoots me in peaceful" bug). Can't they just not spawn in peaceful at all?

As far as I know Java, that shouldn't be too difficult. Just some lines of code.



 Comments   
Comment by kyle cothron [ 07/May/13 ]

i've seen the glitch/bug
first saw it in the rain then it was just were ever it was dark
i was in a server with a friend and he recorded it
it was causing some frame rate issues
the only fix we found was putting up light sources

Comment by Danny Redmond [ 13/Mar/13 ]

confirmed for all conditions of mob spawning in 1.5, they simply spawn and despawn

Comment by doom0r [ 23/Feb/13 ]

I'm standing on an ender farm in the end in SMP watching enderman spawn for a fraction of a second causing the pistons to activate trying to push them off the spawning pad which is a pressure plate wired to the piston. Chunk updates spike as it happens and occasionally there is a redstone update on my torch ladder which is an entirely separate circuit. This does not happen with the identical design on single player. Changing gamemode to creative in multiplayer does NOT resolve the issue either. 1.4.7 sp and server.

Comment by Daniel Conley [ 12/Feb/13 ]

I have also had that issue when changing the difficulty on a server from Normal to peaceful.

Comment by Holger [ 20/Nov/12 ]

Also present in 1.4.5 (SMP)

Comment by David Frey [ 15/Nov/12 ]

Also present in Minecraft 1.4.4 SMP

Comment by Meta [ 01/Nov/12 ]

Uploaded a video. You may note that "/diff" is not a vanilla command in multiplayer (it's from my bukkit plugin), but I tested it with vanilla too and it's the same there.

Comment by Meta [ 01/Nov/12 ]

I have that issue with regular mob spawning in the dark aswell.

EDIT: I noticed it only happens in multiplayer! I'm sorry for forgetting about that. Short video will follow.

Comment by Michael [ 01/Nov/12 ]

Confirmed, but only with mob spawners

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