So Jacknat posted the following and locked the thread without a confirmation that it actually worked. It didn't. To my understanding this is "typed line one and 2 then went back to fix line one the rest bug out" That's not at all what happens in my case. I can go straight down the list and type "1","2","3","4" on each line respectively, no backspaces no going back and editing, and all lines below line 1 will show "?!" instead of text. I've tested it multiple times in different scenarios. It's not bound to my account as it happens with my alts. It doesn't happen when another player logs into my account for me from their computer. It isn't an issue with my client as I've reinstalled MC and Java, I've tested on single player was well as other servers. Removed all of my 1.6.4 modded clients, removed my resource packs dumped my MC directory. I even tried a different internet connection. The only thing I haven't personally tried was using Windows instead of OSX. I'll probably do that this weekend when I get un-lazy and reinstall my VM. I'd like to ask you not to close this thread until I can get a solid and definitive answer.