Game Crashes when Shift + Command + Delete 18 characters at once on Anvil

Description: Rendering screen

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
	at java.lang.String.substring(String.java:1931)
	at cxa.renderButton(SourceFile:413)
	at cws.render(SourceFile:83)
	at dat.render(SourceFile:132)
	at dko.a(SourceFile:686)
	at cvo.e(SourceFile:954)
	at cvo.b(SourceFile:411)
	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:
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-- Head --
Thread: Client thread
Stacktrace:
	at java.lang.String.substring(String.java:1931)
	at cxa.renderButton(SourceFile:413)
	at cws.render(SourceFile:83)
	at dat.render(SourceFile:132)

-- Screen render details --
Details:
	Screen name: dat
	Mouse location: Scaled: (243, 82). Absolute: (974.335938, 328.136719)
	Screen size: Scaled: (480, 270). Absolute: (1920, 1080). Scale factor of 4.000000

-- Affected level --
Details:
	All players: 2 total; [dkb['evllve'/402302, l='MpServer', x=-387.23, y=16.00, z=47.24], dkc['Tyzortyler'/401927, l='MpServer', x=-388.75, y=16.00, z=47.53]]
	Chunk stats: Client Chunk Cache: 729, 484
	Level dimension: minecraft:overworld
	Level name: MpServer
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: {}
	Level spawn location: World: (256,63,-160), Chunk: (at 0,3,0 in 16,-10; contains blocks 256,0,-160 to 271,255,-145), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 65614048 game time, 67581148 day time
	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
	Server brand: vanilla
	Server type: Non-integrated multiplayer server
Stacktrace:
	at dhr.a(SourceFile:421)
	at cvo.b(SourceFile:1923)
	at cvo.b(SourceFile:426)
	at net.minecraft.client.main.Main.main(SourceFile:154)