Ero text chat
A box appears in the bottom left corner, which contains a log of what other players have recently said as well as a text field for the player to add to the conversation.
A profanity filter is in place in order to prevent other players from reading offensive content.
On PC and Mac, all emotes are activated by bringing up the chat window, then typing in the emote command and nothing else.
These commands do not appear in the chat log of other players.
Currently in beta, chat bubbles can be activated from the Interface Settings menu and display a text box above a player's head when they use the chat system.
There are toggle options for displaying bubbles for each of the available audience scopes except for /zone and /guild, as well as the option to only see the chat bubbles of those players who are known to you, either through your Contacts list or Guild rosters.
I don't know but apart from a reboot and the multitude of things you've already done there is nothing likely to be done on your end.
It is useful for getting out of places that a character cannot emerge from; for example, phasing into the ground by accident.