Crash after activating some redstone

Worked with a bit of lag, but ok in 1.10.0, now the game crashed. Happened twice in a row. There are about 10 standard "repeater, 2 redstone, repeater, 2 redstone"-clocks that got activated quickly after another, after about half of it the game crashed. Used this to test MC-711.

---- Minecraft Crash Report ----
// You're mean.

Time: 22.06.16 17:35
Description: Server forgot to send required information to construct BlockEntity

java.lang.RuntimeException: Missing BlockEntity
	at bqy.b(SourceFile:162)
	at bqu.a(SourceFile:100)
	at bqt.b(SourceFile:140)
	at boh.a(SourceFile:913)
	at bnz.a(SourceFile:1237)
	at bnz.b(SourceFile:1171)
	at bnz.a(SourceFile:1018)
	at bcx.av(SourceFile:991)
	at bcx.a(SourceFile:396)
	at net.minecraft.client.main.Main.main(SourceFile:124)


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

-- Head --
Thread: Client thread
Stacktrace:
	at bqy.b(SourceFile:162)

-- BlockEntity missing instance data --
Details:
	BlockState: minecraft:piston_extension[facing=up,type=sticky]
	Block coordinates: World: (-195,55,23), Chunk: (at 13,3,7 in -13,1; contains blocks -208,0,16 to -193,255,31), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Stacktrace:
	at bqy.b(SourceFile:162)
	at bqu.a(SourceFile:100)
	at bqt.b(SourceFile:140)
	at boh.a(SourceFile:913)
	at bnz.a(SourceFile:1237)
	at bnz.b(SourceFile:1171)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bnn['FaRoGaming'/3, l='MpServer', x=-191,87, y=56,00, z=0,81]]
	Chunk stats: MultiplayerChunkCache: 81, 81
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (0,56,0), Chunk: (at 0,3,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 844215 game time, 13000 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
	Forced entities: 8 total; [wk['Rabbit'/1, l='MpServer', x=-175,20, y=56,00, z=38,00], bnn['FaRoGaming'/3, l='MpServer', x=-191,87, y=56,00, z=0,81], aar['Minecart with chest'/5, l='MpServer', x=-229,50, y=56,06, z=2,50], sc['Experience Orb'/6, l='MpServer', x=-211,99, y=56,00, z=5,47], sc['Experience Orb'/7, l='MpServer', x=-208,27, y=56,00, z=3,33], sc['Experience Orb'/8, l='MpServer', x=-208,84, y=56,00, z=3,25], sc['Experience Orb'/9, l='MpServer', x=-210,30, y=56,00, z=4,73], wk['Rabbit'/10, l='MpServer', x=-201,72, y=56,00, z=-28,29]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bln.a(SourceFile:364)
	at bcx.b(SourceFile:2535)
	at bcx.a(SourceFile:405)
	at net.minecraft.client.main.Main.main(SourceFile:124)

-- System Details --
Details:
	Minecraft Version: 1.10.1
	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: 99522872 bytes (94 MB) / 277344256 bytes (264 MB) up to 7502823424 bytes (7155 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx7G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.10.1
	LWJGL: 2.9.4
	OpenGL: Intel(R) HD Graphics GL version 4.0.0 - Build 9.17.10.2963, Intel
	GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

	Using VBOs: Yes
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: FaRoPack
	Current Language: English (Australia)
	Profiler Position: N/A (disabled)
	CPU: 2x Intel(R) Pentium(R) CPU 2117U @ 1.80GHz