Crash when throwing "Splash Potion of Harming" and dying

---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 17/12/17 11:06
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
at ts.a(SourceFile:28)
at ts.a(SourceFile:22)
at ts.<init>(SourceFile:15)
at tu.a(SourceFile:24)
at tu$$Lambda$648/1632385091.apply(Unknown Source)
at java.util.Map.computeIfAbsent(Map.java:957)
at tu.a(SourceFile:24)
at tu.b(SourceFile:41)
at qv.a(SourceFile:455)
at zp.a(SourceFile:848)
at aic.a(SourceFile:884)
at qv.a(SourceFile:525)
at yz.a(SourceFile:114)
at aiy.a(SourceFile:159)
at aiy.a(SourceFile:118)
at aiu.H_(SourceFile:195)
at aqy.a(SourceFile:1570)
at qt.a(SourceFile:705)
at aqy.h(SourceFile:1546)
at aqy.k(SourceFile:1428)
at qt.k(SourceFile:538)
at net.minecraft.server.MinecraftServer.w(SourceFile:667)
at net.minecraft.server.MinecraftServer.v(SourceFile:592)
at clm.v(SourceFile:152)
at net.minecraft.server.MinecraftServer.run(SourceFile:497)
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 ts.a(SourceFile:28)
at ts.a(SourceFile:22)
at ts.<init>(SourceFile:15)
at tu.a(SourceFile:24)
at tu$$Lambda$648/1632385091.apply(Unknown Source)
at java.util.Map.computeIfAbsent(Map.java:957)
at tu.a(SourceFile:24)
at tu.b(SourceFile:41)
at qv.a(SourceFile:455)
at zp.a(SourceFile:848)
at aic.a(SourceFile:884)
at qv.a(SourceFile:525)
at yz.a(SourceFile:114)
at aiy.a(SourceFile:159)
at aiy.a(SourceFile:118)
at aiu.H_(SourceFile:195)
at aqy.a(SourceFile:1570)
at qt.a(SourceFile:705)
at aqy.h(SourceFile:1546)

– Entity being ticked –
Details:
Entity Type: minecraft:potion (aiy)
Entity ID: 6225
Entity Name: ポーション
Entity's Exact location: 266.00, 71.19, 261.92
Entity's Block location: World: (265,71,261), Chunk: (at 9,4,5 in 16,16; contains blocks 256,0,256 to 271,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Entity's Momentum: -0.00, -0.45, 0.01
Entity's Passengers: []
Entity's Vehicle: ~_ERROR~ NullPointerException: null
Stacktrace:
at aqy.k(SourceFile:1428)
at qt.k(SourceFile:538)

– Affected level –
Details:
Level name: 新規ワールド
All players: 1 total; [qv['Hayato15'/245, l='新規ワールド', x=266.08, y=69.00, z=261.74]]
Chunk stats: ServerChunkCache: 553 Drop: 0
Level seed: 5327564213996553958
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (116,64,252), Chunk: (at 4,4,12 in 7,15; contains blocks 112,0,240 to 127,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 272349 game time, 11883 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 147225 (now: false), thunder time: 15150 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.w(SourceFile:667)
at net.minecraft.server.MinecraftServer.v(SourceFile:592)
at clm.v(SourceFile:152)
at net.minecraft.server.MinecraftServer.run(SourceFile:497)
at java.lang.Thread.run(Thread.java:745)

– System Details –
Details:
Minecraft Version: 17w50a
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 224429280 bytes (214 MB) / 754974720 bytes (720 MB) up to 1073741824 bytes (1024 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [qv['Hayato15'/245, l='新規ワールド', x=266.08, y=69.00, z=261.74]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.