The refresh method for chat did not change. So the old chat did not auto-refresh and nor does the new one. So in both cases you need to refresh the game screen to refresh the chat.
DPsycho wrote:
Some of us use it a lot more extensively than I think you realize.
If that's the case there is still the possibility to add the "Old chat" option. The old chat interface is still present there and can be used when you turn off the JavaScript, so the implementation of such option shouldn't be too difficult.