Why does the Chatbox do this?

[Luckairo]

For some reason, whenever I see the chatbox it doesn't let me type anything, and the status always says "Idle".
Here's a picture.

http://puu.sh/1wAqq

[22alec22]

There's a bunch of people having this problem now. We have yet to figure out what is causing it though.

[gamesh4rk]

This happens to me sometimes, I just refresh the page and I am able to type and use the chat box again.

[lockdown6435]

I've been experiencing this for the past week or so. Nothing has fixed it for me.