Bukkit/CraftBukkit — comment on commit 5e63fa2189d538357435d1a31c98303df7bdb8ca
File: src/main/java/net/minecraft/server/NetServerHandler.java line 1042
By Acru:

Error here.

The change from false to true is making it so you can change the text of signs to bypass the sign-based security of things like Lockette and ChestShop, etc.