Magma cube riding zombie causes crash in lava

The bug

When a magma cube riding a zombie falls in lava, minecraft crashes.

How to reproduce

/summon zombie ~ ~ ~  {Passengers:[{id:magma_cube}]}

Crash report

Description: Ticking entity

java.lang.ClassCastException: aio cannot be cast to aqm$d
	at aqm$b.e(SourceFile:500)
	at ajj.a(SourceFile:129)
	at ahm.cU(SourceFile:608)
	at ahl.k(SourceFile:2045)
	at ahm.k(SourceFile:473)
	at ahl.h(SourceFile:1896)
	at ahm.h(SourceFile:284)
	at aqm.h(SourceFile:131)
	at ahc.aK(SourceFile:1693)
	at ahl.aK(SourceFile:2186)
	at bci.a(SourceFile:985)
	at ur.a(SourceFile:392)
	at bci.g(SourceFile:968)
	at bci.a(SourceFile:1033)
	at ur.a(SourceFile:392)
	at bci.g(SourceFile:968)
	at bci.m_(SourceFile:850)
	at ur.m_(SourceFile:308)
	at net.minecraft.server.MinecraftServer.b(SourceFile:827)
	at net.minecraft.server.MinecraftServer.a(SourceFile:756)
	at drn.a(SourceFile:128)
	at net.minecraft.server.MinecraftServer.run(SourceFile:622)
	at java.lang.Thread.run(Thread.java:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Client thread
Stacktrace:
	at aqm$b.e(SourceFile:500)
	at ajj.a(SourceFile:129)
	at ahm.cU(SourceFile:608)
	at ahl.k(SourceFile:2045)
	at ahm.k(SourceFile:473)
	at ahl.h(SourceFile:1896)
	at ahm.h(SourceFile:284)
	at aqm.h(SourceFile:131)
	at ahc.aK(SourceFile:1693)
	at ahl.aK(SourceFile:2186)
	at bci.a(SourceFile:985)
	at ur.a(SourceFile:392)
	at bci.g(SourceFile:968)
	at bci.a(SourceFile:1033)
	at ur.a(SourceFile:392)
	at bci.g(SourceFile:968)

-- Entity being ticked --
Details:
	Entity Type: minecraft:zombie (aqu)
	Entity ID: 83
	Entity Name: Zombie
	Entity's Exact location: 305.14, 61.00, -167.89
	Entity's Block location: World: (305,61,-168), Chunk: (at 1,3,8 in 19,-11; contains blocks 304,0,-176 to 319,255,-161), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Entity's Momentum: 0.00, -0.02, 0.00
	Entity's Passengers: [aqb['Magma Cube'/84, l='Copy of -9068686719535872623', x=305.14, y=61.00, z=-167.89]]
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at bci.m_(SourceFile:850)
	at ur.m_(SourceFile:308)

-- Affected level --
Details:
	Level name: Copy of -9068686719535872623
	All players: 0 total; []
	Chunk stats: ServerChunkCache: 2025
	Level seed: -9068686719535872623
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (224,72,-192), Chunk: (at 0,4,0 in 14,-12; contains blocks 224,0,-192 to 239,255,-177), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 2723 game time, 2723 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 174721 (now: false), thunder time: 143895 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:827)
	at net.minecraft.server.MinecraftServer.a(SourceFile:756)
	at drn.a(SourceFile:128)
	at net.minecraft.server.MinecraftServer.run(SourceFile:622)
	at java.lang.Thread.run(Thread.java:745)