Player Names aren't visible through chests or trapped chests at all on multiplayer servers. Doesn't apply to singleplayer. Basically if you place down a chest and try to look at someone's nametag through it, it's not visible at all. This is useful for creating hidden rooms and stuff but is probably an exploit/bug. I doubt it's intentional. Works in 1.8.1, 1.8 and almost definitely 1.7 versions too.

Crash report: ---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 02/02/15 14:49
Description: Manually triggered debug crash

java.lang.Throwable
at bss.r(SourceFile:1570)
at bss.at(SourceFile:880)
at bss.a(SourceFile:317)
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 –
Stacktrace:
at cem.a(SourceFile:308)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [cin['SpaciousName'/660256, l='MpServer', x=-20.40, y=67.50, z=-868.57]]
Chunk stats: MultiplayerChunkCache: 441, 441
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: -118.00,64.00,258.00 - World: (-118,64,258), Chunk: (at 10,4,2 in -8,16; contains blocks -128,0,256 to -113,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 87912826 game time, 91567284 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: 32 total; [aeq['Creeper'/676362, l='MpServer', x=-57.50, y=12.00, z=-827.50], abu['Chicken'/667023, l='MpServer', x=2.31, y=68.00, z=-854.34], agh['Zombie'/676364, l='MpServer', x=-26.56, y=20.00, z=-855.97], abu['Chicken'/667021, l='MpServer', x=-45.38, y=62.22, z=-849.81], acd['Rabbit'/667162, l='MpServer', x=11.53, y=72.00, z=-887.72], abu['Chicken'/667160, l='MpServer', x=-5.15, y=65.59, z=-864.89], afv['Skeleton'/674072, l='MpServer', x=-32.50, y=38.00, z=-916.50], acm['Sheep'/667161, l='MpServer', x=2.16, y=69.00, z=-877.19], acc['Pig'/667024, l='MpServer', x=-4.13, y=68.00, z=-863.09], acd['Rabbit'/667414, l='MpServer', x=-59.06, y=64.00, z=-832.06], abv['Cow'/667159, l='MpServer', x=-19.63, y=67.00, z=-865.38], agh['Zombie'/677143, l='MpServer', x=26.50, y=61.00, z=-909.50], cio['Connierific'/618908, l='MpServer', x=-109.00, y=64.00, z=-881.13], acm['Sheep'/666665, l='MpServer', x=-15.41, y=64.00, z=-821.54], afv['Skeleton'/675757, l='MpServer', x=-5.50, y=65.00, z=-878.94], afv['Skeleton'/676664, l='MpServer', x=4.50, y=31.00, z=-860.50], adx['item.item.egg'/676148, l='MpServer', x=-45.13, y=60.00, z=-849.88], aeq['Creeper'/675893, l='MpServer', x=-45.50, y=6.00, z=-860.50], aeq['Creeper'/674251, l='MpServer', x=-15.50, y=24.00, z=-855.50], afv['Skeleton'/674760, l='MpServer', x=-34.50, y=37.00, z=-912.50], agh['Zombie'/675777, l='MpServer', x=-25.50, y=20.00, z=-855.50], afv['Skeleton'/674759, l='MpServer', x=-36.50, y=37.00, z=-913.50], agc['Spider'/676549, l='MpServer', x=-48.50, y=17.00, z=-857.50], aeq['Creeper'/676952, l='MpServer', x=-44.50, y=37.00, z=-909.50], cio['Connierific'/618908, l='MpServer', x=-47.06, y=64.00, z=-897.88], agh['Zombie'/670690, l='MpServer', x=-43.50, y=38.00, z=-912.50], cio['Connierific'/618908, l='MpServer', x=-82.84, y=64.00, z=-892.41], acd['Rabbit'/667622, l='MpServer', x=-63.00, y=63.00, z=-840.00], cin['SpaciousName'/660256, l='MpServer', x=-20.40, y=67.50, z=-868.57], adl['entity.ItemFrame.name'/667262, l='MpServer', x=-31.97, y=67.50, z=-887.50], afv['Skeleton'/675580, l='MpServer', x=-23.50, y=20.00, z=-856.50], adl['entity.ItemFrame.name'/667261, l='MpServer', x=-31.97, y=68.50, z=-887.50]]
Retry entities: 0 total; []
Server brand: Spigot
Server type: Non-integrated multiplayer server
Stacktrace:
at cem.a(SourceFile:308)
at bss.b(SourceFile:2278)
at bss.a(SourceFile:326)
at net.minecraft.client.main.Main.main(SourceFile:124)

– System Details –
Details:
Minecraft Version: 1.8.1
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.8.0_31, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 57897672 bytes (55 MB) / 292052992 bytes (278 MB) up to 523501568 bytes (499 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 7, tcache: 88, allocated: 13, tallocated: 95
Launched Version: 1.8.1
LWJGL: 2.9.1
OpenGL: Intel(R) HD Graphics Family GL version 3.1.0 - Build 8.15.10.2598, 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: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (UK)
Profiler Position: N/A (disabled)