I've noticed that when I'm gathering (ore, plants, fishing), my action is cancelled if I try to chat. I can't type a line in guild chat while I'm waiting for the gather to finish. It isn't a problem, but it certainly is a nuisance. I'm not sure if this is intended, or just an oversight on the part of ZOS. Either way, I'd appreciate it if it could get changed!
Every time someone swears, it gets replaced with three asterisks. There's only one three-letter swear word that I know of. I read that in the place of every set of three asterisks. It makes for some amusing sentences.