MinecraftForge/MinecraftForge — pull request #504 by NightKev (2013-04-03 11:51:17+00:00)
Title: Update NetServerHandler.java.patch (fixes MC-1406)

Fixes https://mojang.atlassian.net/browse/MC-1406 "Server and client can disagree on block placement range" (which imo is a very obnoxious bug, especially while in creative mode).

Perhaps not the best/proper fix, but I don't see it causing any harm.