Crash on crafting dyes

What I did

Placed flower (varying) into crafting bench
Clicked on dye to move to inventory
Crash

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

Time: 5/10/17 7:55 AM
Description: Updating screen events

java.lang.NullPointerException: Updating screen events
at java.util.HashMap.putMapEntries(HashMap.java:500)
at java.util.HashMap.putAll(HashMap.java:784)
at bnl.a(SourceFile:192)
at bnl.a(SourceFile:120)
at bnk.a(SourceFile:244)
at bmq.a(SourceFile:200)
at blz.a(SourceFile:342)
at bmq.a(SourceFile:159)
at bld.k(SourceFile:387)
at bld.p(SourceFile:364)
at bhu.t(SourceFile:1581)
at bhu.ax(SourceFile:964)
at bhu.a(SourceFile:404)
at net.minecraft.client.main.Main.main(SourceFile:123)

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

– Head –
Thread: Client thread
Stacktrace:
at java.util.HashMap.putMapEntries(HashMap.java:500)
at java.util.HashMap.putAll(HashMap.java:784)
at bnl.a(SourceFile:192)
at bnl.a(SourceFile:120)
at bnk.a(SourceFile:244)
at bmq.a(SourceFile:200)
at blz.a(SourceFile:342)
at bmq.a(SourceFile:159)
at bld.k(SourceFile:387)
at bld.p(SourceFile:364)

– Affected screen –
Details:
Screen name: bmq

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bty['dawk42'/102, l='MpServer', x=-305.69, y=64.00, z=558.26]]
Chunk stats: MultiplayerChunkCache: 625, 625
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (-268,64,425), Chunk: (at 4,4,9 in -17,26; contains blocks -272,0,416 to -257,255,431), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 53576 game time, 53576 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: 81 total; [ado['Zombie'/130, l='MpServer', x=-356.50, y=23.00, z=624.50], ado['Zombie'/131, l='MpServer', x=-356.50, y=23.00, z=624.50], acv['Guardian'/135, l='MpServer', x=-358.38, y=60.58, z=627.51], adf['Skeleton'/11, l='MpServer', x=-384.28, y=14.00, z=578.57], zo['Bat'/141, l='MpServer', x=-344.25, y=21.10, z=624.25], acn['Creeper'/149, l='MpServer', x=-312.50, y=20.00, z=631.82], ado['Zombie'/151, l='MpServer', x=-297.50, y=28.00, z=624.50], adf['Skeleton'/152, l='MpServer', x=-294.50, y=55.00, z=626.50], zs['Cow'/153, l='MpServer', x=-301.15, y=64.00, z=633.40], zs['Cow'/154, l='MpServer', x=-297.20, y=65.00, z=631.50], acn['Creeper'/27, l='MpServer', x=-374.70, y=55.00, z=481.70], zo['Bat'/28, l='MpServer', x=-366.51, y=36.73, z=574.25], aae['Squid'/29, l='MpServer', x=-365.93, y=56.96, z=574.47], aae['Squid'/30, l='MpServer', x=-367.90, y=56.87, z=581.88], aco['Elder Guardian'/31, l='MpServer', x=-377.42, y=40.00, z=606.00], acv['Guardian'/32, l='MpServer', x=-377.08, y=44.00, z=609.42], acv['Guardian'/33, l='MpServer', x=-373.13, y=41.00, z=614.57], acv['Guardian'/35, l='MpServer', x=-383.50, y=44.00, z=618.50], bty['dawk42'/102, l='MpServer', x=-305.69, y=64.00, z=558.26], acv['Guardian'/36, l='MpServer', x=-378.87, y=47.00, z=621.94], acv['Guardian'/37, l='MpServer', x=-385.06, y=40.00, z=606.42], acv['Guardian'/38, l='MpServer', x=-375.28, y=40.00, z=606.19], acv['Guardian'/39, l='MpServer', x=-381.57, y=40.00, z=607.29], acv['Guardian'/40, l='MpServer', x=-374.14, y=41.00, z=613.89], acv['Guardian'/41, l='MpServer', x=-378.09, y=43.00, z=622.77], acv['Guardian'/43, l='MpServer', x=-376.50, y=41.00, z=617.50], zs['Cow'/45, l='MpServer', x=-357.68, y=63.00, z=509.99], zs['Cow'/46, l='MpServer', x=-355.60, y=64.00, z=497.85], zo['Bat'/47, l='MpServer', x=-353.23, y=20.36, z=592.42], zo['Bat'/48, l='MpServer', x=-352.39, y=23.10, z=623.25], zo['Bat'/49, l='MpServer', x=-350.47, y=23.62, z=617.68], ado['Zombie'/50, l='MpServer', x=-356.50, y=23.00, z=622.50], acv['Guardian'/51, l='MpServer', x=-366.41, y=32.00, z=611.21], acv['Guardian'/52, l='MpServer', x=-367.58, y=44.00, z=612.04], ado['Zombie'/53, l='MpServer', x=-339.48, y=20.00, z=513.17], zs['Cow'/54, l='MpServer', x=-345.57, y=63.00, z=553.52], zs['Cow'/55, l='MpServer', x=-347.19, y=63.00, z=547.82], zs['Cow'/56, l='MpServer', x=-350.75, y=63.00, z=549.19], zs['Cow'/57, l='MpServer', x=-340.39, y=61.34, z=562.54], zo['Bat'/58, l='MpServer', x=-350.56, y=19.20, z=587.29], zo['Bat'/59, l='MpServer', x=-344.63, y=19.69, z=581.39], zo['Bat'/60, l='MpServer', x=-336.96, y=19.68, z=582.87], aae['Squid'/63, l='MpServer', x=-316.80, y=54.19, z=580.85], aae['Squid'/64, l='MpServer', x=-328.39, y=52.00, z=602.77], ado['Zombie'/67, l='MpServer', x=-301.50, y=16.00, z=493.75], adf['Skeleton'/68, l='MpServer', x=-316.50, y=28.00, z=506.50], adf['Skeleton'/69, l='MpServer', x=-313.50, y=29.00, z=513.50], adf['Skeleton'/70, l='MpServer', x=-308.50, y=27.00, z=527.50], zs['Cow'/71, l='MpServer', x=-311.82, y=61.36, z=533.95], acg['item.item.stick'/72, l='MpServer', x=-313.68, y=50.00, z=570.45], aae['Squid'/73, l='MpServer', x=-324.12, y=58.25, z=566.22], aae['Squid'/74, l='MpServer', x=-327.17, y=59.14, z=574.55], aae['Squid'/75, l='MpServer', x=-307.40, y=48.66, z=590.17], ado['Zombie'/76, l='MpServer', x=-302.50, y=16.00, z=494.50], zs['Cow'/77, l='MpServer', x=-300.47, y=71.00, z=551.38], acg['item.item.bowl'/78, l='MpServer', x=-303.88, y=50.00, z=562.13], acg['item.item.flowerPot'/79, l='MpServer', x=-298.74, y=55.00, z=576.10], ado['Zombie'/80, l='MpServer', x=-301.50, y=18.00, z=597.50], ado['Zombie'/81, l='MpServer', x=-301.50, y=18.00, z=598.50], ado['Zombie'/82, l='MpServer', x=-296.50, y=18.00, z=601.50], ado['Zombie'/83, l='MpServer', x=-296.50, y=18.00, z=600.50], zs['Cow'/84, l='MpServer', x=-290.69, y=68.00, z=621.70], zs['Cow'/85, l='MpServer', x=-281.77, y=67.00, z=535.55], zo['Bat'/86, l='MpServer', x=-276.84, y=21.03, z=598.49], zs['Cow'/87, l='MpServer', x=-281.81, y=69.00, z=618.13], ado['Zombie'/89, l='MpServer', x=-270.50, y=28.00, z=554.50], zo['Bat'/90, l='MpServer', x=-264.44, y=26.28, z=562.18], zo['Bat'/91, l='MpServer', x=-268.75, y=35.10, z=574.25], ado['Zombie'/92, l='MpServer', x=-268.50, y=33.00, z=578.50], zo['Bat'/93, l='MpServer', x=-251.41, y=34.38, z=571.17], adf['Skeleton'/95, l='MpServer', x=-250.27, y=24.00, z=534.54], adf['Skeleton'/96, l='MpServer', x=-248.50, y=37.00, z=590.50], zo['Bat'/97, l='MpServer', x=-250.53, y=37.04, z=591.25], adf['Skeleton'/98, l='MpServer', x=-248.50, y=37.00, z=592.50], zo['Bat'/99, l='MpServer', x=-244.50, y=38.10, z=592.61], zr['Chicken'/100, l='MpServer', x=-232.50, y=13.00, z=487.50], acv['Guardian'/113, l='MpServer', x=-384.50, y=40.00, z=630.50], acv['Guardian'/119, l='MpServer', x=-379.58, y=40.00, z=636.73], acv['Guardian'/120, l='MpServer', x=-373.43, y=40.00, z=636.42], acv['Guardian'/121, l='MpServer', x=-381.50, y=44.00, z=626.50], acv['Guardian'/125, l='MpServer', x=-383.69, y=53.00, z=636.13]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at brw.a(SourceFile:365)
at bhu.b(SourceFile:2538)
at bhu.a(SourceFile:413)
at net.minecraft.client.main.Main.main(SourceFile:123)

– System Details –
Details:
Minecraft Version: 1.12-pre1
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 149937208 bytes (142 MB) / 372146176 bytes (354 MB) up to 2134114304 bytes (2035 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
Launched Version: 1.12-pre1
LWJGL: 2.9.4
OpenGL: GeForce GTX 970/PCIe/SSE2 GL version 4.5.0 NVIDIA 382.05, NVIDIA Corporation
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: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 16x AMD Ryzen 7 1700X Eight-Core Processor