I logged onto minecraft a couple days ago and a message popped down from the top of my screen, the way the ‘character failed to load’ or the ‘you just bought’ messages appear. Except it was either total nonsense, or it was another language. It was pretty weird! It didn't occur to me to take a screenshot at the time, but it looked more like symbols. I don't use any other language and I don't speak nonsense, so it must've been a bug.