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Type: Bug
Resolution: Awaiting Response
Fix Version/s: None
Affects Version/s: Minecraft 18w43c
Labels:
None
Environment:

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+Operating System+

Edition: Windows 10 Pro

Version: 1803

Installed on: 5/21/2018

OS build: 17134.345

+Java version+

Java Version: 1.8.0_191

Java SE Runtime Environment build: 1.8.0_191-b12

Java HotSpot 64-Bit Server VM build: 25.191-b12, mixed mode

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+Operating System+ Edition: Windows 10 Pro Version: 1803 Installed on: 5/21/2018 OS build: 17134.345 +Java version+ Java Version: 1.8.0_191 Java SE Runtime Environment build: 1.8.0_191-b12 Java HotSpot 64-Bit Server VM build: 25.191-b12, mixed mode

Confirmation Status:
Unconfirmed
Category:

(Unassigned)

After logging onto the server (hosted from the same machine as I am playing on) and eating steak before everything had visually loaded in, I timed out.
Logging back into the server caused the entire server to crash, after opening the server and logging in, I noticed that the two beds near me appeared to be invisible, after right clicking on a part of the bed and laying in it, that part of the bed became visible again, as shown in the image, with only one and a half beds visible.
Two furnaces located in the same chunk as the two beds also appeared to still be smelting the cobblestone i put in them, but opening them up there appeared to be no items in them, and no heat, despite the block visually showing that it was on.
Part of a double chest was in the same chunk, and the items in that part of the chest were gone.

When I joined there was one other person playing on the server, who joined over the internet. They were not near enough to me to be loading the chunk beforehand. The server had been run by a bat file including the following:

java -Xmx4G -Xms4G -jar server.jar nogui

I have also attached the server's crash report file.

18w43c: crash-2018-10-27_18.23.54-server.txt

---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.

Time: 10/27/18 6:23 PM
Description: Ticking block entity

java.lang.NullPointerException: Ticking block entity
	at bkr.s(SourceFile:347)
	at bkr.a(SourceFile:190)
	at bkt.a(SourceFile:372)
	at bkt.a(SourceFile:336)
	at bkt.s(SourceFile:200)
	at bkt.a(SourceFile:142)
	at bkt.Z_(SourceFile:129)
	at aza.n_(SourceFile:1060)
	at tz.n_(SourceFile:293)
	at net.minecraft.server.MinecraftServer.b(SourceFile:738)
	at th.b(SourceFile:360)
	at net.minecraft.server.MinecraftServer.a(SourceFile:664)
	at net.minecraft.server.MinecraftServer.run(SourceFile:568)
	at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Server thread
Stacktrace:
	at bkr.s(SourceFile:347)
	at bkr.a(SourceFile:190)
	at bkt.a(SourceFile:372)
	at bkt.a(SourceFile:336)
	at bkt.s(SourceFile:200)
	at bkt.a(SourceFile:142)
	at bkt.Z_(SourceFile:129)

-- Block entity being ticked --
Details:
	Name: minecraft:hopper // bkt
	Block: Block{minecraft:hopper}[enabled=true,facing=down]
	Block location: World: (-2549,66,2245), Chunk: (at 11,4,5 in -160,140; contains blocks -2560,0,2240 to -2545,255,2255), Region: (-5,4; contains chunks -160,128 to -129,159, blocks -2560,0,2048 to -2049,255,2559)
	Block: Block{minecraft:hopper}[enabled=true,facing=down]
	Block location: World: (-2549,66,2245), Chunk: (at 11,4,5 in -160,140; contains blocks -2560,0,2240 to -2545,255,2255), Region: (-5,4; contains chunks -160,128 to -129,159, blocks -2560,0,2048 to -2049,255,2559)
Stacktrace:
	at aza.n_(SourceFile:1060)
	at tz.n_(SourceFile:293)

-- Affected level --
Details:
	Level name: world
	All players: 2 total; [ub['124scratch'/108766, l='world', x=-22.72, y=69.00, z=413.36], ub['chair_tan'/152514, l='world', x=-2511.92, y=79.00, z=2083.28]]
	Chunk stats: ServerChunkCache: 4762
	Level seed: 2947854692355743996
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (-16,66,240), Chunk: (at 0,4,0 in -1,15; contains blocks -16,0,240 to -1,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 2011571 game time, 2269744 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 21433 (now: false), thunder time: 80412 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:738)
	at th.b(SourceFile:360)
	at net.minecraft.server.MinecraftServer.a(SourceFile:664)
	at net.minecraft.server.MinecraftServer.run(SourceFile:568)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 18w43c
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_191, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 966901680 bytes (922 MB) / 3867148288 bytes (3688 MB) up to 3867148288 bytes (3688 MB)
	JVM Flags: 2 total; -Xmx4G -Xms4G
	Profiler Position: N/A (disabled)
	Player Count: 2 / 20; [ub['124scratch'/108766, l='world', x=-22.72, y=69.00, z=413.36], ub['chair_tan'/152514, l='world', x=-2511.92, y=79.00, z=2083.28]]
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)