Create a new world and make the world type customized, make the preset:
minecraft:bedrock,2000000*minecraft:dirt,minecraft:grass_block;minecraft:plains;village
Press save and then the game crashes with:
Reported exception thrown!
j: mouseClicked event handler
at ctp.a(SourceFile:435)
at cpl.a(SourceFile:84)
at cpl$$Lambda$1214/1704329166.invoke(Unknown Source)
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3029)
at cog.l(SourceFile:422)
at cog.c(SourceFile:280)
at cpk.a_(SourceFile:982)
at cpk.d(SourceFile:935)
at cpk.b(SourceFile:394)
at net.minecraft.client.main.Main.main(SourceFile:154)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 256
at bzp.y(SourceFile:196)
at bzp.b(SourceFile:374)
at csy.a(SourceFile:70)
at ctm$1.a(SourceFile:170)
at cqi.a(SourceFile:103)
at cre.a(SourceFile:46)
at cpl.b(SourceFile:84)
at cpl$$Lambda$1384/333751456.run(Unknown Source)
at ctp.a(SourceFile:430)
... 11 more
18:33:37 launcher
---- Minecraft Crash Report ----
// Why did you do that?
Time: 12/23/18 6:33 PM
Description: mouseClicked event handler
java.lang.ArrayIndexOutOfBoundsException: 256
at bzp.y(SourceFile:196)
at bzp.b(SourceFile:374)
at csy.a(SourceFile:70)
at ctm$1.a(SourceFile:170)
at cqi.a(SourceFile:103)
at cre.a(SourceFile:46)
at cpl.b(SourceFile:84)
at cpl$$Lambda$1384/333751456.run(Unknown Source)
at ctp.a(SourceFile:430)
at cpl.a(SourceFile:84)
at cpl$$Lambda$1214/1704329166.invoke(Unknown Source)
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3029)
at cog.l(SourceFile:422)
at cog.c(SourceFile:280)
at cpk.a_(SourceFile:982)
at cpk.d(SourceFile:935)
at cpk.b(SourceFile:394)
at net.minecraft.client.main.Main.main(SourceFile:154)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Thread: Client thread
Stacktrace:
at bzp.y(SourceFile:196)
at bzp.b(SourceFile:374)
at csy.a(SourceFile:70)
at ctm$1.a(SourceFile:170)
at cqi.a(SourceFile:103)
at cre.a(SourceFile:46)
at cpl.b(SourceFile:84)
at cpl$$Lambda$1384/333751456.run(Unknown Source)
-- Affected screen --
Details:
Screen name: ctm
Stacktrace:
at ctp.a(SourceFile:430)
at cpl.a(SourceFile:84)
at cpl$$Lambda$1214/1704329166.invoke(Unknown Source)
at org.lwjgl.glfw.GLFWMouseButtonCallbackI.callback(GLFWMouseButtonCallbackI.java:36)
at org.lwjgl.system.JNI.invokeV(Native Method)
at org.lwjgl.glfw.GLFW.glfwPollEvents(GLFW.java:3029)
at cog.l(SourceFile:422)
at cog.c(SourceFile:280)
at cpk.a_(SourceFile:982)
at cpk.d(SourceFile:935)
at cpk.b(SourceFile:394)
at net.minecraft.client.main.Main.main(SourceFile:154)
-- System Details --
Details:
Minecraft Version: 18w50a
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: 1364882840 bytes (1301 MB) / 2801795072 bytes (2672 MB) up to 4294967296 bytes (4096 MB)
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx4G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
Launched Version: 18w50a
LWJGL: 3.1.6 build 14
OpenGL: Intel(R) HD Graphics 4000 GL version 4.0.0 - Build 10.18.10.4358, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 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: vanilla, file/modified
Current Language: English (US)
CPU: 8x Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
#@!@# Game crashed! Crash report saved to: #@!@# C:\Users\Person\AppData\Roaming\.minecraft\crash-reports\crash-2018-12-23_18.33.37-client.txt
AL lib: (EE) alc_cleanup: 1 device not closed
Linked issues
duplicates 1
Comments 2


happens in 19w09a
Issue in 1.13 and higher, this doesn't happen on 1.12.2