Manually spawning Illagers during raid crashes and breaks Raids completely

While a raid is in progress, using Spawn Eggs to create more Raid-compatible entities will eventually cause a crash and completely break the Village's Raid system, stopping the current Raid and preventing any further Raids from occurring. 

Going to another village with Bad Omen will spawn another raid, but the village that caused the crash will not spawn more raids, and will literally eat Bad Omens.

19w04a\: [^crash-2019-01-24_12.55.43-server.txt]

---- Minecraft Crash Report ----
// My bad.

Time: 1/24/19 12:55 PM
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
	at ahc.c(SourceFile:1215)
	at aso$a.e(SourceFile:262)
	at ajj.a(SourceFile:129)
	at ahm.cT(SourceFile:608)
	at ahl.k(SourceFile:2045)
	at ahm.k(SourceFile:473)
	at aqc.k(SourceFile:33)
	at aso.k(SourceFile:73)
	at ahl.h(SourceFile:1896)
	at ahm.h(SourceFile:284)
	at aqc.h(SourceFile:45)
	at bcl.a(SourceFile:958)
	at ur.a(SourceFile:363)
	at bcl.g(SourceFile:938)
	at bcl.k_(SourceFile:820)
	at ur.k_(SourceFile:279)
	at net.minecraft.server.MinecraftServer.b(SourceFile:862)
	at net.minecraft.server.MinecraftServer.a(SourceFile:791)
	at dri.a(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:657)
	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: Server thread
Stacktrace:
	at ahc.c(SourceFile:1215)
	at aso$a.e(SourceFile:262)
	at ajj.a(SourceFile:129)
	at ahm.cT(SourceFile:608)
	at ahl.k(SourceFile:2045)
	at ahm.k(SourceFile:473)
	at aqc.k(SourceFile:33)
	at aso.k(SourceFile:73)
	at ahl.h(SourceFile:1896)
	at ahm.h(SourceFile:284)
	at aqc.h(SourceFile:45)
	at bcl.a(SourceFile:958)
	at ur.a(SourceFile:363)
	at bcl.g(SourceFile:938)

-- Entity being ticked --
Details:
	Entity Type: minecraft:pillager (aqg)
	Entity ID: 3099760
	Entity Name: Pillager
	Entity's Exact location: 334.50, 4.00, -312.50
	Entity's Block location: World: (334,4,-313), Chunk: (at 14,0,7 in 20,-20; contains blocks 320,0,-320 to 335,255,-305), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Entity's Momentum: 0.00, 0.00, 0.00
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at bcl.k_(SourceFile:820)
	at ur.k_(SourceFile:279)

-- Affected level --
Details:
	Level name: crash test
	All players: 1 total; [ut['The_Endgineer'/1457978, l='crash test', x=336.21, y=6.01, z=-312.37]]
	Chunk stats: ServerChunkCache: 2657
	Level seed: 2401109142741771855
	Level generator: ID 01 - flat, ver 0. Features enabled: true
	Level generator options: {}
	Level spawn location: World: (160,4,-112), Chunk: (at 0,0,0 in 10,-7; contains blocks 160,0,-112 to 175,255,-97), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 2742 game time, 2742 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 39992 (now: false), thunder time: 30964 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.b(SourceFile:862)
	at net.minecraft.server.MinecraftServer.a(SourceFile:791)
	at dri.a(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:657)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 19w04a
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 876363200 bytes (835 MB) / 1610612736 bytes (1536 MB) up to 2147483648 bytes (2048 MB)
	JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
	Player Count: 1 / 8; [ut['The_Endgineer'/1457978, l='crash test', x=336.21, y=6.01, z=-312.37]]
	Data Packs: vanilla
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.