Creating Superflat (Waterworld) without Water causes a crasch

1. Start; Minecraft 18W10D

2. click on Singelplayer

3. click on Create New World

4. change Game Mode to Creative

5. click on More World Options

6. change World Type to Superflat

7. click Customize

8. click Presets

9. use the Waterworld Preset

10. Remove the Water layer in the following Window

11. click done

12. create New World

13. its hanging up instantly (crash)

Crash repot can not be attached, it says there are a missing Token.

I feel free to insert here;

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 11.03.18 07:38
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
	at auw.a(SourceFile:429)
	at bjg.e(SourceFile:60)
	at bjg.<init>(SourceFile:46)
	at biw.o(SourceFile:46)
	at se.o(SourceFile:719)
	at se.<init>(SourceFile:127)
	at cyv.a(SourceFile:96)
	at cyv.d(SourceFile:131)
	at net.minecraft.server.MinecraftServer.run(SourceFile:502)
	at java.lang.Thread.run(Thread.java:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 18w10d
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 112632240 bytes (107 MB) / 285212672 bytes (272 MB) up to 1073741824 bytes (1024 MB)
	JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.