Batching chunks crash on 1.13.1 vanilla server

Just walking down some stairs and I crashed out.

Vanilla server running 1.13-1-pre1, the crash was my client running on OSX

1.13.1-pre1\: [^crash.txt]

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 19/08/18 15:45
Description: Batching chunks

java.lang.ArrayIndexOutOfBoundsException: -82358
	at cwu.a_(SourceFile:102)
	at cws.b(SourceFile:159)
	at cwp.a(SourceFile:103)
	at cwp.run(SourceFile:45)
	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: Client thread
Stacktrace:
	at cwu.a_(SourceFile:102)

-- Affected level --
Details:
	Level name: MpServer
	All players: 2 total; [cti['secretlondon'/3864446, l='MpServer', x=-193.38, y=68.00, z=239.47], ctj['BorderGuy'/4049814, l='MpServer', x=-137.07, y=64.00, z=260.83]]
	Chunk stats: MultiplayerChunkCache: 961, 961
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: {}
	Level spawn location: World: (-160,64,213), Chunk: (at 0,4,5 in -10,13; contains blocks -160,0,208 to -145,255,223), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 64467921 game time, 68411411 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Non-integrated multiplayer server
Stacktrace:
	at crf.a(SourceFile:418)
	at cfs.b(SourceFile:1815)
	at cwp.run(SourceFile:51)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 1.13.1-pre1
	Operating System: Mac OS X (x86_64) version 10.11.6
	Java Version: 1.8.0_74, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 463146600 bytes (441 MB) / 838860800 bytes (800 MB) up to 2147483648 bytes (2048 MB)
	JVM Flags: 8 total; -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Launched Version: 1.13.1-pre1
	LWJGL: 3.1.6 build 14
	OpenGL: NO CONTEXT
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because ARB_framebuffer_object is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

	Using VBOs: Yes
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: 
	Current Language: English (United Kingdom)
	Profiler Position: N/A (disabled)
	CPU: 2x Intel(R) Core(TM)2 Duo CPU P8700 @ 2.53GHz