Crash when creating a debug world

Failure while loading the debug world on the latest snapshot.

To reproduce, hold shift while clicking the world types until you get the debug world option.

18w11a\: [^crash-2018-03-14_18.24.14-server.txt]

---- Minecraft Crash Report ----
// Don't be sad, have a hug! <3

Time: 3/14/18 6:24 PM
Description: Exception ticking world

java.lang.RuntimeException: Error while removing chunk from cache. Not enough neighbors
	at bif.H(SourceFile:1155)
	at sb.a(SourceFile:59)
	at sb.a(SourceFile:69)
	at sb.remove(SourceFile:11)
	at it.unimi.dsi.fastutil.longs.Long2ObjectFunctions$SynchronizedFunction.remove(Long2ObjectFunctions.java:300)
	at sd.d(SourceFile:289)
	at se.k_(SourceFile:199)
	at net.minecraft.server.MinecraftServer.w(SourceFile:694)
	at net.minecraft.server.MinecraftServer.v(SourceFile:627)
	at czd.v(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:532)
	at java.lang.Thread.run(Thread.java:745)


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

-- Head --
Thread: Server thread
Stacktrace:
	at bif.H(SourceFile:1155)
	at sb.a(SourceFile:59)
	at sb.a(SourceFile:69)
	at sb.remove(SourceFile:11)
	at it.unimi.dsi.fastutil.longs.Long2ObjectFunctions$SynchronizedFunction.remove(Long2ObjectFunctions.java:300)
	at sd.d(SourceFile:289)
	at se.k_(SourceFile:199)

-- Affected level --
Details:
	Level name: New World
	All players: 1 total; [sg[' '/16908, l='New World', x=-1.50, y=61.00, z=9.50]]
	Chunk stats: ServerChunkCache: 490 Drop: 50
	Level seed: 6187402092753868271
	Level generator: ID 05 - debug_all_block_states, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (0,1,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 11 game time, 6000 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 1 (now: false), thunder time: 1 (now: false)
	Level game mode: Game mode: spectator (ID 3). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.w(SourceFile:694)
	at net.minecraft.server.MinecraftServer.v(SourceFile:627)
	at czd.v(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:532)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 18w11a
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 439531112 bytes (419 MB) / 673206272 bytes (642 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [sg[' '/16908, l='New World', x=-1.50, y=61.00, z=9.50]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.