[MC-174731] Modifying "soul.json" (inside of "particles" folder) causes crash

The bug

I was making a resource-pack that makes tweaks to sounds and visuals of the game. I've modified particles to look smoother/more natural. I was doing the same thing for the "soul" particle but it ended up crashing my game. Here is a video I've uploaded to YouTube that shows the bug in action, as well as how you can recreate it.

To reproduce

Download and enable the attached Texture and Sound Tweaks EDITED.zip resource pack
Equip boots enchanted with soul speed
Walk on soul sand
Look behind you
→ The game crashes

Video

https://www.youtube.com/watch?v=BYy_fFRg-8I

Stack trace

20w11a: crash-2020-03-13_23.49.11-client.txt

Description: Ticking Particle

java.lang.ArrayIndexOutOfBoundsException: 16
	at com.google.common.collect.RegularImmutableList.get(RegularImmutableList.java:60)
	at dve$a.a(SourceFile:91)
	at dvw.b(SourceFile:46)
	at dvn.a(SourceFile:27)
	at dve.b(SourceFile:333)
	at dve.a(SourceFile:322)
	at dve.a(SourceFile:295)
	at dve$$Lambda$3634/1809217972.accept(Unknown Source)
	at java.util.IdentityHashMap.forEach(Unknown Source)
	at dve.b(SourceFile:293)
	at dhh.p(SourceFile:1542)
	at dhh.d(SourceFile:976)
	at dhh.d(SourceFile:631)
	at net.minecraft.client.main.Main.main(SourceFile:204)