I don't even know what to call this bug. I was minding my own underhanded business when suddenly I was stopped in my tracks by a box of Dialogue that said
Fenix Windail
"What would you like to do?"
I clicked it closed and the words showed up in my text bar as 'Unknown Speaker' and in my combat Log it said
You have not achieved the required level to learn that spell.
I asked the player and this is what we determined. During this exchange I was physically unable to send him numberous tells if they were too long, like when I was explaining what happened. About two in ever three tells just vanished after I hit enter. I think it was because of length.