Bubble chat messages above players are delayed and show up even many minutes after the person spoke something.
This occurs when a player is not looking at another player who typed in chat chat, and then looks at that person who talked a while later and sees those bubble chat messages (basically desynced/delayed bubble messages).
Also, other peoples’ chat messages show up above my head instead of the other players who had spoke those messages (this happened once when I exited the Casino and people inside had talked a bit, and their messages showed up above my head instead).