/unbind enter may work.
Tech help forum is Here.
HTML no longer functions in chat binds, so you need to remove it from your chat binds. Assuming you're using your enter key to start chat, use /unbind enter to revert it to its default function.
If the key you're pressing has other stuff in it - like commands to send your chat to a global channel - type /showbind x (replacing "x" with the name of the key you're using), copy whatever it returns (it will be in the system messages channel which is normally green and defaults to the Global tab), and rebind it to that key with the HTML removed.
@Roderick
/unbind enter worked, thanks both. This can be closed
I used to play about 6 years ago and you to use some fancy chat commands/settings/whatever to change the colours of your chat bubbles.
When I type it always starts with <color #990066><bgcolor #00000010><duration 10><scale 4> and it's bugging out my chat. Any way I can remove/stop these?