Stand on a pressure plate with a flame enchanted bow. Quickly fire the arrow and into the pressure plate and immediately engage flight mode so you do not pick up the arrow. As you will see, the arrow does not immediately become on fire and takes around 3-4 seconds to light itself on fire.
Environment
Microsoft Windows 7 64-bit, Java SE7 U9.
Attachments
Comments 6
Please force a crash by pressing F3 + C ingame for 10 seconds and attach the resulting crash report in .minecraft/crash-reports/ here.
Doesn't do that it 12w49a.
Do you have any mods installed?