[MC-8839] Clicking done when editing sign crashes minecraft

I was Making an Adventure Map editing signs and such.. edited one sign and clicked done whilst holding down LSHIFT and it seemed to of crashed my Minecraft

Linked issues

is duplicated by

MC-8859 Crashes the game after placing a sign under a sand block that is falling.

MC-8894 Game Crashes when Sign Placed

Attachments

Crash Report 31.1.2013 20.51-Client.txt

Comments

Tails 2013-01-31T21:09:02Z

Note:

Description: Updating screen events
java.lang.NullPointerException
	at apy.k_(SourceFile:114)
	at ayr.a(SourceFile:52)
	at awy.a(SourceFile:72)
	at awy.d(SourceFile:127)
	at awy.m(SourceFile:111)