1-9 keys ignore stacking restrictions

Cannot reproduce.

Please force a crash by pressing F3 + C for 10 seconds while ingame and attach the crash report here.

---- Minecraft Crash Report ----
// I just don't know what went wrong :(

Time: 3/14/13 5:03 PM
Description: Manually triggered debug crash

java.lang.Throwable
	at net.minecraft.client.Minecraft.l(SourceFile:1162)
	at net.minecraft.client.Minecraft.K(SourceFile:572)
	at net.minecraft.client.Minecraft.run(SourceFile:524)
	at java.lang.Thread.run(Unknown Source)


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

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bdp['GenesisArk'/424, l='MpServer', x=-143.05, y=72.62, z=223.22]]
	Chunk stats: MultiplayerChunkCache: 441
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-240,64,252), Chunk: (at 0,4,12 in -15,15; contains blocks -240,0,240 to -225,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 6181 game time, 6181 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: 94 total; [rd['entity.MinecartChest.name'/274, l='MpServer', x=-188.50, y=22.50, z=277.50], rb['item.tile.rail'/273, l='MpServer', x=-185.88, y=22.13, z=267.88], qc['Chicken'/259, l='MpServer', x=-185.47, y=68.00, z=151.53], qc['Chicken'/256, l='MpServer', x=-184.56, y=68.00, z=146.56], qc['Chicken'/263, l='MpServer', x=-180.41, y=71.00, z=184.25], qc['Chicken'/260, l='MpServer', x=-190.41, y=68.00, z=170.44], rd['entity.MinecartChest.name'/261, l='MpServer', x=-190.50, y=18.50, z=185.50], qa['Bat'/266, l='MpServer', x=-188.25, y=19.10, z=201.13], rd['entity.MinecartChest.name'/267, l='MpServer', x=-183.50, y=16.50, z=214.50], rd['entity.MinecartChest.name'/264, l='MpServer', x=-184.50, y=17.50, z=204.50], qa['Bat'/265, l='MpServer', x=-176.31, y=21.14, z=185.75], rb['item.tile.rail'/270, l='MpServer', x=-191.13, y=13.13, z=241.66], rd['entity.MinecartChest.name'/271, l='MpServer', x=-183.50, y=22.34, z=267.50], rd['entity.MinecartChest.name'/268, l='MpServer', x=-188.50, y=17.50, z=225.50], rb['item.item.string'/305, l='MpServer', x=-160.88, y=20.13, z=223.13], rb['item.tile.rail'/304, l='MpServer', x=-166.88, y=20.13, z=218.13], qa['Bat'/307, l='MpServer', x=-173.59, y=56.10, z=259.00], qa['Bat'/308, l='MpServer', x=-169.72, y=23.89, z=264.56], qc['Chicken'/317, l='MpServer', x=-161.44, y=66.00, z=144.63], rb['item.tile.rail'/319, l='MpServer', x=-152.81, y=20.13, z=168.06], rb['item.tile.rail'/318, l='MpServer', x=-154.84, y=20.13, z=167.13], qc['Chicken'/292, l='MpServer', x=-162.47, y=68.00, z=147.84], rb['item.tile.rail'/296, l='MpServer', x=-161.88, y=20.13, z=168.78], qc['Chicken'/297, l='MpServer', x=-167.44, y=71.00, z=164.56], qc['Chicken'/298, l='MpServer', x=-164.63, y=70.00, z=195.56], rb['item.tile.gravel'/299, l='MpServer', x=-162.50, y=27.13, z=209.38], rb['item.tile.gravel'/300, l='MpServer', x=-162.88, y=27.13, z=211.66], rb['item.tile.gravel'/301, l='MpServer', x=-162.13, y=27.13, z=211.88], rb['item.tile.gravel'/302, l='MpServer', x=-162.88, y=27.13, z=210.41], rb['item.tile.rail'/303, l='MpServer', x=-164.19, y=20.13, z=220.81], qd['Cow'/343, l='MpServer', x=-114.94, y=71.00, z=247.13], qd['Cow'/342, l='MpServer', x=-127.84, y=71.00, z=227.94], qd['Cow'/341, l='MpServer', x=-115.59, y=72.00, z=233.38], qd['Cow'/340, l='MpServer', x=-114.53, y=65.00, z=180.69], qd['Cow'/339, l='MpServer', x=-121.63, y=67.00, z=179.25], qd['Cow'/338, l='MpServer', x=-120.63, y=69.00, z=189.41], qd['Cow'/337, l='MpServer', x=-121.31, y=64.00, z=174.22], qd['Cow'/348, l='MpServer', x=-118.22, y=72.00, z=290.16], qd['Cow'/347, l='MpServer', x=-123.41, y=72.00, z=285.44], qd['Cow'/346, l='MpServer', x=-129.63, y=74.00, z=276.59], qd['Cow'/345, l='MpServer', x=-122.38, y=67.00, z=263.47], qd['Cow'/344, l='MpServer', x=-123.84, y=69.00, z=252.19], rb['item.tile.rail'/326, l='MpServer', x=-154.47, y=19.13, z=211.00], rb['item.tile.rail'/327, l='MpServer', x=-159.19, y=20.13, z=213.13], rb['item.tile.rail'/324, l='MpServer', x=-158.22, y=20.13, z=214.59], rb['item.tile.rail'/325, l='MpServer', x=-156.88, y=20.13, z=217.16], qc['Chicken'/322, l='MpServer', x=-165.47, y=73.00, z=188.41], rb['item.tile.rail'/323, l='MpServer', x=-150.59, y=23.13, z=215.59], rb['item.tile.rail'/320, l='MpServer', x=-151.72, y=20.13, z=167.44], qc['Chicken'/321, l='MpServer', x=-159.31, y=70.00, z=191.53], qd['Cow'/334, l='MpServer', x=-128.53, y=72.00, z=281.69], qd['Cow'/333, l='MpServer', x=-139.25, y=69.00, z=231.84], qd['Cow'/368, l='MpServer', x=-109.03, y=69.00, z=301.13], qd['Cow'/381, l='MpServer', x=-94.50, y=65.00, z=188.50], qd['Cow'/380, l='MpServer', x=-90.91, y=64.00, z=186.16], qd['Cow'/383, l='MpServer', x=-84.56, y=71.00, z=238.38], qa['Bat'/382, l='MpServer', x=-70.47, y=46.67, z=198.09], qd['Cow'/379, l='MpServer', x=-88.47, y=67.00, z=188.53], qa['Bat'/378, l='MpServer', x=-82.25, y=49.08, z=180.66], qd['Cow'/364, l='MpServer', x=-98.50, y=65.00, z=290.50], qd['Cow'/365, l='MpServer', x=-101.50, y=65.00, z=291.50], qd['Cow'/366, l='MpServer', x=-97.81, y=68.00, z=298.19], qd['Cow'/367, l='MpServer', x=-96.44, y=70.00, z=301.97], qd['Cow'/361, l='MpServer', x=-106.09, y=71.00, z=238.94], qd['Cow'/362, l='MpServer', x=-97.22, y=66.00, z=288.50], qd['Cow'/363, l='MpServer', x=-107.53, y=65.00, z=288.47], qd['Cow'/399, l='MpServer', x=-65.41, y=68.00, z=200.63], qd['Cow'/398, l='MpServer', x=-70.22, y=67.00, z=196.53], qa['Bat'/397, l='MpServer', x=-73.28, y=46.14, z=193.69], qd['Cow'/387, l='MpServer', x=-89.66, y=68.00, z=242.09], qd['Cow'/386, l='MpServer', x=-87.47, y=68.00, z=244.72], qd['Cow'/385, l='MpServer', x=-91.88, y=68.00, z=244.56], qd['Cow'/384, l='MpServer', x=-89.50, y=68.00, z=247.78], qd['Cow'/390, l='MpServer', x=-100.81, y=69.00, z=250.88], qd['Cow'/389, l='MpServer', x=-89.44, y=68.00, z=246.50], qd['Cow'/388, l='MpServer', x=-90.72, y=68.00, z=243.50], bdp['GenesisArk'/424, l='MpServer', x=-143.05, y=72.62, z=223.22], qa['Bat'/222, l='MpServer', x=-211.50, y=60.10, z=187.25], rd['entity.MinecartChest.name'/223, l='MpServer', x=-223.50, y=14.50, z=199.50], qa['Bat'/218, l='MpServer', x=-211.25, y=18.10, z=171.25], qa['Bat'/215, l='MpServer', x=-212.75, y=37.10, z=147.75], qa['Bat'/239, l='MpServer', x=-194.00, y=55.29, z=189.66], qa['Bat'/238, l='MpServer', x=-199.44, y=57.10, z=169.25], qa['Bat'/234, l='MpServer', x=-212.38, y=2.10, z=287.25], qi['Sheep'/232, l='MpServer', x=-215.31, y=75.00, z=251.78], qi['Sheep'/231, l='MpServer', x=-218.09, y=75.00, z=254.31], qi['Sheep'/230, l='MpServer', x=-217.75, y=75.00, z=252.69], rd['entity.MinecartChest.name'/228, l='MpServer', x=-220.50, y=11.50, z=241.50], qa['Bat'/247, l='MpServer', x=-199.25, y=18.10, z=253.13], rb['item.tile.rail'/245, l='MpServer', x=-193.50, y=13.13, z=242.75], rd['entity.MinecartChest.name'/242, l='MpServer', x=-196.50, y=14.50, z=202.50], qa['Bat'/243, l='MpServer', x=-197.34, y=23.10, z=200.25], rb['item.item.seeds'/240, l='MpServer', x=-202.66, y=68.13, z=172.28], qa['Bat'/241, l='MpServer', x=-203.31, y=15.10, z=185.53]]
	Retry entities: 0 total; []
Stacktrace:
	at bdm.a(SourceFile:282)
	at net.minecraft.client.Minecraft.b(SourceFile:1879)
	at net.minecraft.client.Minecraft.run(SourceFile:533)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 1.5
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_17, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 348208608 bytes (332 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 7251 (406056 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
	LWJGL: 2.4.2
	OpenGL: Intel(R) G45/G43 Express Chipset GL version 2.1.0 - Build 8.15.10.2555, Intel
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Texture Pack: Default
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 918 (51408 bytes; 0 MB) allocated, 11 (616 bytes; 0 MB) used

Confirmed: Place a stack of pumpkins into a hotbar slot, hover with the cursor over your head and press the hotbar key you placed the stack into.

Updated to 1.5.2, bug still exists. Crash report added as an attachment.

Still present in 14w08a.

Confirmed for 1.7.5 and 14w10c

Changed reporter to myself since original reporter is inactive.