If you drop an anvil on powered redstone, your game will crash.
Rendering entity in world Problem
12 January 2013
Falling anvil landing on a repeater crash
Falling anvil on a lightsensor cause the Client to crash
Client crashes when amboss falls on activated restone.
Crash when dropping anvil on powered redstone dust
Anvil crash with fire
Droping a anvil on redstone crashes the game.
Game Crashes when Anvil falls on tripwire
When anvil falls on flowing water on edge of a block it crashes the game
Crash when dropping anvil onto lever