Arrows shot at Nether Portal bug

Me and my lovely skeleton in a Void world were friendly giving arrows to each other when suddenly the skeleton shot an arrow into a Nether Portal and my entire game were destroyed (Like a chash but it wasn't)

Edit: I put a dirt wall behind, so the arrow stays ticking!

There isn't any photos, just this in the launcher:

Minecraft Crash Report ----
// Ooh. Shiny.

Time: 17/09/15 11:25
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
at ze.m(SourceFile:179)
at agv.a(SourceFile:1456)
at lk.a(SourceFile:659)
at agv.g(SourceFile:1434)
at agv.k(SourceFile:1328)
at lk.k(SourceFile:538)
at net.minecraft.server.MinecraftServer.D(SourceFile:618)
at net.minecraft.server.MinecraftServer.C(SourceFile:546)
at bvq.C(SourceFile:154)
at net.minecraft.server.MinecraftServer.run(SourceFile:450)
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 –
Stacktrace:
at ze.m(SourceFile:179)
at agv.a(SourceFile:1456)
at lk.a(SourceFile:659)
at agv.g(SourceFile:1434)

– Entity being ticked –
Details:
Entity Type: Arrow (ze)
Entity ID: 3497
Entity Name: Arrow
Entity's Exact location: -80,50, 32,24, 30,21
Entity's Block location: World: (-81,32,30), Chunk: (at 15,2,14 in -6,1; contains blocks -96,0,16 to -81,255,31), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Entity's Momentum: 1,19, -0,38, -0,11
Entity's Rider: ~_ERROR~ NullPointerException: null
Entity's Vehicle: ~_ERROR~ NullPointerException: null
Stacktrace:
at agv.k(SourceFile:1328)
at lk.k(SourceFile:538)

– Affected level –
Details:
Level name: Scoreboard
All players: 1 total; [lm['PurpleNightmare'/20, l='Scoreboard', x=-562,37, y=4,00, z=168,70]]
Chunk stats: ServerChunkCache: 626 Drop: 0
Level seed: 1523227475976933319
Level generator: ID 01 - flat, ver 0. Features enabled: true
Level generator options: 3;minecraft:air;127;decoration
Level spawn location: World: (-553,4,167), Chunk: (at 7,0,7 in -35,10; contains blocks -560,0,160 to -545,255,175), Region: (-2,0; contains chunks -64,0 to -33,31, blocks -1024,0,0 to -513,255,511)
Level time: 202547 game time, 19119 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 1 (now: false), thunder time: 1 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.D(SourceFile:618)
at net.minecraft.server.MinecraftServer.C(SourceFile:546)
at bvq.C(SourceFile:154)
at net.minecraft.server.MinecraftServer.run(SourceFile:450)
at java.lang.Thread.run(Thread.java:745)

– System Details –
Details:
Minecraft Version: 15w38a
Operating System: Windows XP (x86) version 5.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 358877000 bytes (342 MB) / 523501568 bytes (499 MB) up to 523501568 bytes (499 MB)
JVM Flags: 7 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -Xmx512M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [lm['PurpleNightmare'/20, l='Scoreboard', x=-562,37, y=4,00, z=168,70]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.