Maybe related to MC-115812
The bug
Closing a world while the debug pie chart is open causes the game to crash.
[^(17w50a) crash-2017-12-26_21.30.27-client.txt]
Description: Unexpected error
java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.ArrayList.elementData(Unknown Source)
at java.util.ArrayList.remove(Unknown Source)
at ut.e(SourceFile:103)
at bne.b(SourceFile:887)
at bne.a(SourceFile:380)
at net.minecraft.client.main.Main.main(SourceFile:140)
How to reproduce
Open a world
Open the debug pie chart by pressing
SHIFT
+F3
Close the world while the pie chart is still open
Can confirm for 18w01a