Error in viewing chat

From time to time I get viewing from chat like this what I like to see all the time is this.

Oh, using Linux and my desktop browser is Firefox 28.0.
Oh2, resising or refreshing didn’t help only restarting the webbrowser.

I don’t understand… can you describe it?

He is talking about the player list.

In the picture you can see the top of the user list and the group channels section is cut off. I assume that also means the top of the chat is also cut off.

yes, top of the all lists in chat is cut off and it happen when I just type to the address bar and load the page.