[MC-95128] Rare! Kill a mob = crashed game.

I walked over to a rabbit, killed, and out of nowhere, the game crashed. It's that simple. You'll find my OS in the crash report. (By the way, Apparently 1.8.8 isn't a released version.)

Description: Exception ticking world

java.lang.NullPointerException: Exception ticking world
	at aqu.a(SourceFile:40)
	at aqq.a(SourceFile:93)
	at aoa.a(SourceFile:440)
	at ld.a(SourceFile:174)
	at amy.a(SourceFile:857)
	at ld.c(SourceFile:104)
	at ld.d(SourceFile:116)
	at adm.a(SourceFile:277)
	at adm.f(SourceFile:273)
	at adm.p(SourceFile:658)
	at ahe.b(SourceFile:66)
	at afh.a(SourceFile:445)
	at le.h(SourceFile:383)
	at le.c(SourceFile:202)
	at net.minecraft.server.MinecraftServer.B(SourceFile:599)
	at net.minecraft.server.MinecraftServer.A(SourceFile:535)
	at bpo.A(SourceFile:152)
	at net.minecraft.server.MinecraftServer.run(SourceFile:451)
	at java.lang.Thread.run(Thread.java:745)