Firework star crashes game if there's an int array but no colors

The bug

type the following command to get a firework star with custom color:

/give @s minecraft:firework_star{Explosion:{Colors:[I;<color code>]}}

game will crash when <color code> is nothing:

/give @s minecraft:firework_star{Explosion:{Colors:[I;]}}

and game will NOT crash when:

/give @s minecraft:firework_rocket{Fireworks:{Explosions:[{Colors:[I;]}]}}

Crash report

18w03b\: [^crash-2018-01-19_15.33.49-client.txt]

Description: Rendering entity in world

java.lang.ArithmeticException: / by zero
	at boq$3.getColor(SourceFile:70)
	at boq.a(SourceFile:117)
	at cfx.a(SourceFile:182)
	at cfx.a(SourceFile:100)
	at cfx.a(SourceFile:80)
	at cfx.a(SourceFile:118)
	at cfv.a(SourceFile:142)
	at cfv.a(SourceFile:18)
	at cfg.a(SourceFile:362)
	at cfg.a(SourceFile:349)
	at cba.a(SourceFile:615)
	at cau.b(SourceFile:1178)
	at cau.a(SourceFile:1086)
	at cau.a(SourceFile:944)
	at bob.b(SourceFile:822)
	at bob.a(SourceFile:382)
	at net.minecraft.client.main.Main.main(SourceFile:140)